Unit 4【刷语法】连词and, but, because（重点语法提升练）-2025-2026学年七年级英语上册单元模块满分必刷题（人教版2024）

2025-2026学年七年级英语上册单元模块满分必刷题（人教版2024） Unit 4 My Favourite Subject【刷语法】(重点语法提升练) 连词and, but, because 1. and的用法 and表示并列关系，意为“和，又”，用来连接两个或两个以上的单词、短语或句子。在连接三个或三个以上的单词、短语或句子时，and一般置于最后的单词、短语或句子之前。 My sister and I study in the same school. 我和我的妹妹在同一所学校上学。 John is from Italy and Tina is from Italy too.约翰来自意大利，蒂娜也来自意大利。 拓展延伸： 连词and还常用于“祈使句+and+陈述句”结构中，意为“那么，就”。其中祈使句表示条件，连词and后的陈述句则通常表示一个较好的结果，且陈述句常用一般将来时。 Work hard and you’ll pass the examination. 努力学习，你就会通过考试。 2. but的用法 but表示转折关系，意为“但是”，所连接的成分意思往往相反或相对。 He went to bed, but he could not all asleep.他去睡觉了，但睡不着。 The garden is small but beautiful. 这个花园虽小但很漂亮。 3. because的用法 because表示因果关系，意为“因为”, 后跟原因。 I didn’t go to school because I was ill. 我没去上学因为我生病了。 He succeeded because he worked hard. 他成功了因为他努力工作。 注意：because和so不能同时使用 语法过关小测 满分：50分：时间：60分钟 一、单项选择（每小题1分，共50分） 1．Always work together, ________ we are sure to make the world a better place. A．or B．but C．and 【答案】C 【详解】句意：只要我们一直共同努力，我们一定能让世界变得更美好。 考查连词辨析。or否则；but但是；and和。根据“Always work together,...we are sure to make the world a better place.”可知，此句是“祈使句+and/or+陈述句”结构，前后句是顺承关系，应用and。故选C。 2．Kangkang stands on a chair ______ Lingling helps to clean the blackboard. A．so B．and C．but D．or 【答案】B 【详解】句意：康康站在椅子上，并且玲玲帮助擦黑板。 考查并列连词辨析。so所以；and并且；but但是；or或者。根据分析句子可知，前后构成并列关系，所以此处应该填入并列连词and，意为“并且”，表并列关系。故选B。 3．I’m Linda, _____ this is my brother John. John is in No. 5 Middle School, ______ I’m not. A．and; and B．and; but C．but; and 【答案】B 【详解】句意:我是琳达，这是我的弟弟约翰。约翰在第五中学，但是我不是。 考查连词。and和，而且；but但是。“I’m Linda”和“this is my brother John”是并列关系，用连词“and”连接。根据“I’m not”可知前后是转折关系，用连词“but”。故选B。 4．Lucy ________ Lily are classmates. They are in Class 1. A．but B．or C．and 【答案】C 【详解】句意：露西和莉莉是同班同学。她们在一班。 考查连词辨析。but但是，转折关系；or或者，选择关系；and和，并列关系。根据“They are in Class 1.”可知，句子表达的是露西和莉莉是同班同学这一并列关系。故选C。 5．—I wanted to play football, but it started raining. —Oh, I see. You stayed home ________ the weather was bad, right? A．after B．because C．although D．or 【答案】B 【详解】句意：——我想踢足球，但是天气开始下雨了。——哦，我知道了。你待在家是因为天气不好，对吗？ 考查连词辨析。after在……之后；because因为；although尽管；or或者。“You stayed home”和“the weather was bad”构成因果关系，空后为原因。故选B。 6．My sister _______ I are tidy, _______my brother isn’t. A．and; but B．and; and C．but; but D．but;and 【答案】A 【详解】句意：我和姐姐爱整洁的，但是我的哥哥不是。 本题考查连词。and而且，but但是。第一空表示my sister和I并列作主语，用and连接，第二空，因为前半句是肯定形式，后半句是否定形式，用连词but表示转折，故选A。 7．My sister doesn’t eat hamburgers ________ she doesn’t want to be fat. A．or B．because C．so 【答案】B 【详解】句意：我姐姐不吃汉堡，因为她不想变胖。 考查because用法。or或者；because因为；so所以。根据“she doesn’t want to be fat.”可知，不吃汉堡是因为不想变胖，应用because。故选B。 8．English is my favourite subject, ________ my brother doesn’t like it. A．but B．because C．so D．and 【答案】A 【详解】句意：英语是我最喜欢的科目，但我哥哥不喜欢它。 考查连词辨析。but但是；because因为；so所以；and然后，和。分析题干，前后句表示转折关系，应用but修饰，意为“但是”。故选A。 9．The bed was not very big _________ not very small. A．and B．or C．but D．so 【答案】A 【详解】句意：这张床不是很大也不是很小。 考查连词辨析。and和，表示并列或顺承；or或者，表示选择；but但是，表示转折；so所以，表示因果。“not very big”和“not very small”是并列关系，应用“and”连接。故选A。 10．The book is useful _________ it’s easy to understand. A．because B．but C．and 【答案】C 【详解】句意：这本书很有用，并且它很容易理解。 考查连词辨析。because因为；but但是；and并且。根据“The book is useful ... it’s easy to understand.”可知，前后句是并列关系，用and连接。故选C。 11．Gina doesn’t like to go out at night _____ she is afraid of the dark. A．when B．but C．because D．if 【答案】C 【详解】句意：Gina不喜欢晚上出门，因为她害怕黑暗。 考查连词辨析。when当……时候；but但是；because因为；if如果。根据“Gina doesn’t like to go out at night”和“she is afraid of the dark”可知，怕黑是不敢在晚上出去的原因，用because引导原因状语从句。故选C。 12．Amy wants to write about rabbits ________ they’re cute. She likes them a lot. A．because B．so C．and D．but 【答案】A 【详解】句意：Amy想写兔子，因为它们很可爱。她非常喜欢它们。 考查连词辨析。because因为；so所以；and而且；but但是。根据“they’re cute”可知是因为兔子可爱，所以才想写它们，应用because引导原因状语从句。故选A。 13．—Let’s go ________ swim. —OK. A．\ B．and C．play 【答案】B 【详解】句意：——让我们去游泳吧。——好的。 考查并列连词。\不填；and和；play玩。go和swim是并列关系，用并列连词and连接，故选B。 14．I can dance, ________ I can’t cook. A．or B．but C．and 【答案】B 【详解】句意：我会跳舞，但我不会做饭。 考查并列连词辨析。or或者，用于选择；but但是，表示转折；and和，用于并列。根据前后句“I can dance,...I can’t cook.”可知会跳舞和不会做饭是转折关系，应用but连接。故选B。 15．Lingling cleaned the desks ________ her friends swept the floor. A．and B．but C．or D．because 【答案】A 【详解】句意：玲玲擦了桌子，她的朋友们扫了地。 考查连词辨析。and和、并且；but但是；or或者、否则；because因为。根据“Lingling cleaned the desks...her friends swept the floor.”可知，句中“Lingling cleaned the desks”与“her friends swept the floor”是两个并列的动作，“and”用于连接两个并列的分句，符合语境。故选A。 16．—Would you like to have a picnic with us this Saturday?   —I’d like to, ________ I plan to help my mum do housework. A．so B．and C．but D．or 【答案】C 【详解】句意：——这个星期六你想和我们一起去野餐吗？——我很想去，但是我计划帮妈妈做家务。 考查连词辨析。so所以；and然后；but但是；or否则。根据“I’d like to…I plan to help my mum do housework.”可知，此处表示转折，“我”很想去野餐，但是“我”打算帮妈妈做家务。故选C。 17．—Why do you like summer? —________ I can go swimming. A．What B．Because C．Which 【答案】B 【详解】句意：——你为什么喜欢夏天？——因为我可以去游泳。 考查特殊疑问句的回答。what什么；because因为；which哪一个。根据“Why do you like summer?”可知，要回答喜欢夏天的原因。故选B。 18．Judy can’t call her Chinese teacher ______ she doesn’t know his phone number. A．and B．or C．but D．because 【答案】D 【详解】句意：朱迪不能给她的语文老师打电话，因为她不知道他的电话号码。 考查连词辨析。and和；or或者；but但是；because因为。根据“Judy can’t call her Chinese teacher ... she doesn’t know his phone number.”可知，前后分句是因果关系，用because引导原因状语从句。故选D。 19．This is our school farm. It’s not big, ________ we grow many different plants here. A．or B．because C．so D．but 【答案】D 【详解】句意：这是我们学校的农场。它不大，但我们在这里种了很多不同的植物。 考查连词辨析。or否则；because因为；so所以；but但是。根据“It’s not big, ... we grow many different plants here.”可知，此处指学校的农场虽然不大，但是在这里种了很多不同的植物，前后句是转折关系，用but连接，故选D。 20．The game “Stardew Valley” is exciting, ________ you should not stay up late to play it. A．but B．so C．or 【答案】A 【详解】句意：《星露谷物语》这款游戏是令人兴奋的，但你不应该熬夜玩它。 考查连词的用法。but但是；so所以；or或者，否则。前半句说游戏是令人兴奋的，后半句说不该熬夜玩，前后是转折关系，用but连接。故选A。 21．—I like cooking, ________ I’m not good at it. —You may ask Lily for help. She cooks nice food. A．and B．but C．or 【答案】B 【详解】句意：——我喜欢做饭，但我不擅长。——你可以向莉莉求助。她做的菜很好吃。 考查连词辨析。and和；but但是；or或者。前后两句是转折关系，用but连接。故选B。 22．I usually drink coffee in the morning, ________ today I feel like drinking tea. A．and B．but C．so D．or 【答案】B 【详解】句意：我通常早上喝咖啡，但今天我想喝茶。 考查并列连词辨析。and和，又；but但是；so因此；or或者。根据“I usually drink coffee in the morning…today I feel like drinking tea.”可知，此处指的是我通常早上喝咖啡，今天早上想喝茶，空格前后句子为转折关系。but“但是”，并列连词表转折，符合语境。故选B。 23．—Is everyone here today? —No. Tom is at home ________ he has got a bad cold. A．because B．if C．until D．unless 【答案】A 【详解】句意：——今天大家都到齐了吗？——没有。汤姆在家，因为他得了感冒。 考查连词辨析。because因为；if如果；until直到；unless除非。根据“Tom is at home”和“he has got a bad cold.”可知，感冒是汤姆在家的原因，需用表示原因的连词because。故选A。 24．Tom couldn’t sleep last night he drank too much coffee. A．although B．because C．so D．once 【答案】B 【详解】句意：汤姆昨晚睡不着，因为他喝了太多咖啡。 考查连词辨析。although 虽然；because 因为；so 所以；once 一旦。根据“Tom couldn’t sleep last night”以及“he drank too much coffee”可知，汤姆昨晚没睡着是因为喝了太多咖啡，前后是因果关系，前果后因，所以用because引导原因状语从句。故选B。 25．—Shall we go camping in the park or on the beach? —Either is fine with me. __________ I think the beach will be more fun. A．But B．And C．Or 【答案】A 【详解】句意：——我们去公园露营还是去海滩露营？——我都可以。但我觉得海滩会更有趣。 考查连词辨析。But但是；And和；Or或者。根据“Either is fine with me...I think the beach will be more fun.”可知，前后句为转折关系，应用but连接。故选A。 26．—How do you like songs sung by Liu Huan? —They are wonderful, ________ I can’t hear his words clearly sometimes. A．but B．so C．because D．if 【答案】A 【详解】句意：——你觉得刘欢唱的歌怎么样？——他们很棒，但我有时听不清他的话。 考查连词辨析。but但是；so因此；because因为；if如果。根据“They are wonderful…I can’t hear his words clearly sometimes.”可知，此处指的是刘欢的歌曲和听不清歌词为转折关系。故选A。 27．Look at the cute penguins! Penguins have wings, ________ they can’t fly. A．and B．so C．or D．but 【答案】D 【详解】句意：看这些可爱的企鹅！企鹅有翅膀，但它们不会飞。 考查连词辨析。and和；so所以；or或者；but但是。根据“Penguins have wings, ... they can’t fly.”可知，空处前后表转折，企鹅有翅膀但不会飞，需用but连接。故选D。 28．The woman was very tired, ________ she still kept on working. A．so B．but C．and D．or 【答案】B 【详解】句意：这个女人很累，但她仍然继续工作。 考查连词辨析。so所以；but但是；and和；or或者。根据“The woman was very tired”和“she still kept on working”可知，前后句是转折关系，尽管累却坚持工作，需用表示转折关系的连词but连接。故选B。 29．Practice more, ________ you’ll do better in playing the piano. A．but B．or C．because D．and 【答案】D 【详解】句意：多练习，那么你将更擅长弹钢琴。 考查连词辨析。but但是；or或者；because因为；and那么。根据“Practice more”和“you’ll do better in playing the piano”可知，前后两个分句之间为递进关系，所以，and符合题意。故选D。 30．This is Betty ________ she is my friend, ________ she is not in my class. A．and ; and B．but ; and C．and ; but D．but ; but 【答案】C 【详解】句意：这是贝蒂，她是我的朋友，但是她不在我的班级。 考查连词辨析。and和；but但是。根据“This is Betty ...she is my friend”可知，空前空后是并列的顺承关系，用连词and连接；空二前面说“她是我朋友”，空后说“我们不在一个班”，前后之间存在转折关系，用连词but连接。故选C。 31．My grandfather is 70 years old, ________ he looks young. He likes sports, ________ he is very healthy. A．but, or B．but, so C．and, because 【答案】B 【详解】句意：我的祖父70岁了。但是他看起来很年轻。他喜欢运动，所以他非常健康。 考查连词辨析。but但是，表示转折；or或者，表示选择；so所以； because因为；and和，表示并列。根据“My grandfather is 70 years old”和“he looks young”可知，前后表示转折，所以用but；根据“He likes sports”和“he is very healthy”可知，前后是因果关系，所以用so。故选B。 32．I don’t like drawing, ________ I like my art teacher very much. A．but B．so C．and 【答案】A 【详解】句意：我不喜欢画画，但是我非常喜欢我的美术老师。 考查连词辨析。but但是，表示转折；so所以，表示因果；and和，表示并列。根据“I don’t like drawing”以及“I like my art teacher very much”可知，前后句子意思发生转折，应用“but”来连接。故选A。 33．Joe usually plays basketball after school, ________ he is a football fan. A．because B．but C．or 【答案】B 【详解】句意：乔放学后通常打篮球，但他是个足球迷。 考查并列连词。because因为，表示因果关系；but但是，表示转折关系；or或者，表示选择关系。根据“Joe usually plays basketball after school,...he is a football fan.”可知，前后句之间构成转折逻辑，因此用“but”。故选B。 34．I like taking photos, ________ my cousin doesn’t like it. A．but B．so C．for D．or 【答案】A 【详解】句意：我喜欢拍照，但我表弟不喜欢。 考查并列连词辨析。but但是；so因此；for因为；or或者。根据“I like taking photos, ...my cousin doesn’t like it”可知，我喜欢拍照，我表弟不喜欢，前后句发生转折，用but。故选A。 35．Our room was big ________ everything was very old. A．but B．because C．about 【答案】A 【详解】句意：我们的房子很大但是每样东西都很旧。 考查并列连词。but但是； because因为；about关于。根据“Our room was big”以及“everything was very old”的语境可知，此处句意发生了转折，指房子大， 但是物品旧。故选A。 36．It’s difficult, ________ I can try. A．and B．so C．then D．but 【答案】D 【详解】句意：它很难，但是我可以试试。 考查连词辨析。and和，表并列关系；so所以，表示因果关系；then然后，副词；but但是，表示转折关系。根据“It’s difficult, ... I can try.”可知，这里强调转折，故选D。 37．I want to go swimming, ________ I’ve got a cold. A．and B．but C．so 【答案】B 【详解】句意：我想去游泳，但我感冒了。 考查连词辨析。and和；but但是；so所以。根据“I want to go swimming,...I’ve got a cold”可知，前后句意存在转折关系（想去游泳与感冒矛盾），需用表转折的连词but。故选B。 38．—Why was he late? —He was late ________ he was ill, not ________ the bad weather. A．because; because of B．because of; because C．because; so 【答案】A 【详解】句意：——他为什么迟到？——他迟到是因为他病了，而不是因为天气不好。 考查连词和介词短语。because因为，后接句子；because of因为，介词短语，后跟名词或名词短语；so所以。结合语境可知，第一空后为句子，故应用because；第二空后是名词短语，应用because of表原因。故选A。 39．Judy likes having the history class, ________ his history teacher is very fun. A．so B．or C．but D．because 【答案】D 【详解】句意：朱迪喜欢上历史课，因为他的历史老师很有趣。 考查连词辨析。so所以；or或者；but但是；because因为。根据“Judy likes having the history class, ...his history teacher is very fun.”可知，设空处的前后句意之间是因果关系，前果后因，所以用because引导原因状语从句。故选D。 40．Teamwork is important ________ it can make our dreams come true. A．so B．because C．but D．or 【答案】B 【详解】句意：团队合作非常重要，因为它能够让我们实现梦想。 考查连词辨析。so所以；because因为；but但是；or或者，否则。分析句子结构可知，前句“Teamwork is important”与后句“it can make our dreams come true”为因果关系，应用because引导原因状语从句。故选B。 41．I like English ________ it’s interesting and useful. A．so B．but C．because 【答案】C 【详解】句意：我喜欢英语，因为它有趣而且有用。 考查连词辨析。so因此；but但是；because因为。根据“I like English … it’s interesting and useful.”可知，前后句是因果关系。故选C。 42．We don’t keep baby lions as pets ________ they are wild animals. A．if B．after C．because D．before 【答案】C 【详解】句意：我们不把小狮子当宠物养，因为它们是野生动物。 考查连词辨析。if如果；after在……之后；because因为；before在……之前。根据“they are wild animals.”可知，我们不把小狮子当宠物养，因为它们是野生动物。可知此处用because引导原因状语从句。故选C。 43．Goldilocks was very hungry _________ she didn’t eat anything for two days. A．because B．so C．but D．or 【答案】A 【详解】句意：金发姑娘很饿因为她两天没吃任何东西了。 考查连词辨析。because因为；so因此；but但是；or或者。根据“she didn’t eat anything for two days.”可知，空后解释了她很饿的原因，应该用because引导原因状语从句。故选A。 44．The animals are losing their homes ________ people cut down many trees. A．so B．because C．and D．but 【答案】B 【详解】句意：因为人们砍伐了许多树，动物们正在失去它们的家园。 考查连词辨析。so因此；because因为；and而且；but但是。根据“people cut down many trees”可知人们砍伐树木是动物失去家园的原因，应用because引导原因状语从句。故选B。 45．Lucy likes penguins very much ________ they are very cute. A．and B．so C．or D．because 【答案】D 【详解】句意：露西非常喜欢企鹅，因为它们非常可爱。 考查连词。and和；so所以；or否则；because因为。根据“Lucy likes penguins very much...they are very cute.”可知，因为企鹅可爱，所以露西非常喜欢，两者是因果关系。故选D。 46．Dr. Lee usually walks to work ________ his home is close to the hospital. A．and B．but C．because 【答案】C 【详解】句意：李医生经常走路去上班，因为他家离医院很近。 考查原因状语从句。and和，表并列；but但是，表转折；because因为。根据空格前后的句子关系可知，后半句是前半句的原因，因此填“因为”。故选C。 47．My sister doesn’t eat hamburgers ________ she doesn’t want to be fat. A．or B．so C．but D．because 【答案】D 【详解】句意：我姐姐不吃汉堡包，因为她不想变胖。 考查连词辨析。or或者；so所以；but但是；because因为。后句是前句的原因，需要用because引导原因状语从句。故选D。 48．I have a basketball, ________ my brother doesn’t. A．but B．and C．so D．or 【答案】A 【详解】句意：我有一个篮球，但我的弟弟没有。 考查连词辨析。but但是；and和；so因此；or或者。“I have a basketball,”与“my brother doesn’t”是转折关系，故选A。 49．I’d love to go to the theatre tonight, ________ I am too busy. A．because B．or C．but D．and 【答案】C 【详解】句意：我今晚很想去剧院，但是我太忙了。 考查连词辨析。because因为，表示因果关系；or或者，表示选择关系；but但是，表示转折关系；and和，表示并列关 系。根据“I’d love to go to the theatre tonight, ...I am too busy”可知，前后两句之间存在转折关系。故选C。 50．We are making a big cake ________ it’s Dad’s birthday today. A．because B．until C．once D．if 【答案】A 【详解】句意：我们正在做一个大蛋糕，因为今天是爸爸的生日。 考查连词辨析。because因为；until直到；once一……就；if如果。“it’s Dad’s birthday today”是前面做蛋糕的原因，二者存在因果关系，需用because引导原因状语从句。故选A。 学科网（北京）股份有限公司 $$ 2025-2026学年七年级英语上册单元模块满分必刷题（人教版2024） Unit 4 My Favourite Subject【刷语法】(重点语法提升练) 连词and, but, because 1. and的用法 and表示并列关系，意为“和，又”，用来连接两个或两个以上的单词、短语或句子。在连接三个或三个以上的单词、短语或句子时，and一般置于最后的单词、短语或句子之前。 My sister and I study in the same school. 我和我的妹妹在同一所学校上学。 John is from Italy and Tina is from Italy too.约翰来自意大利，蒂娜也来自意大利。 拓展延伸： 连词and还常用于“祈使句+and+陈述句”结构中，意为“那么，就”。其中祈使句表示条件，连词and后的陈述句则通常表示一个较好的结果，且陈述句常用一般将来时。 Work hard and you’ll pass the examination. 努力学习，你就会通过考试。 2. but的用法 but表示转折关系，意为“但是”，所连接的成分意思往往相反或相对。 He went to bed, but he could not all asleep.他去睡觉了，但睡不着。 The garden is small but beautiful. 这个花园虽小但很漂亮。 3. because的用法 because表示因果关系，意为“因为”, 后跟原因。 I didn’t go to school because I was ill. 我没去上学因为我生病了。 He succeeded because he worked hard. 他成功了因为他努力工作。 注意：because和so不能同时使用 语法过关小测 满分：50分：时间：60分钟 一、单项选择（每小题1分，共50分） 1．Always work together, ________ we are sure to make the world a better place. A．or B．but C．and 2．Kangkang stands on a chair ______ Lingling helps to clean the blackboard. A．so B．and C．but D．or 3．I’m Linda, _____ this is my brother John. John is in No. 5 Middle School, ______ I’m not. A．and; and B．and; but C．but; and 4．Lucy ________ Lily are classmates. They are in Class 1. A．but B．or C．and 5．—I wanted to play football, but it started raining. —Oh, I see. You stayed home ________ the weather was bad, right? A．after B．because C．although D．or 6．My sister _______ I are tidy, _______my brother isn’t. A．and; but B．and; and C．but; but D．but;and 7．My sister doesn’t eat hamburgers ________ she doesn’t want to be fat. A．or B．because C．so 8．English is my favourite subject, ________ my brother doesn’t like it. A．but B．because C．so D．and 9．The bed was not very big _________ not very small. A．and B．or C．but D．so 10．The book is useful _________ it’s easy to understand. A．because B．but C．and 11．Gina doesn’t like to go out at night _____ she is afraid of the dark. A．when B．but C．because D．if 12．Amy wants to write about rabbits ________ they’re cute. She likes them a lot. A．because B．so C．and D．but 13．—Let’s go ________ swim. —OK. A．\ B．and C．play 14．I can dance, ________ I can’t cook. A．or B．but C．and 15．Lingling cleaned the desks ________ her friends swept the floor. A．and B．but C．or D．because 16．—Would you like to have a picnic with us this Saturday?   —I’d like to, ________ I plan to help my mum do housework. A．so B．and C．but D．or 17．—Why do you like summer? —________ I can go swimming. A．What B．Because C．Which 18．Judy can’t call her Chinese teacher ______ she doesn’t know his phone number. A．and B．or C．but D．because 19．This is our school farm. It’s not big, ________ we grow many different plants here. A．or B．because C．so D．but 20．The game “Stardew Valley” is exciting, ________ you should not stay up late to play it. A．but B．so C．or 21．—I like cooking, ________ I’m not good at it. —You may ask Lily for help. She cooks nice food. A．and B．but C．or 22．I usually drink coffee in the morning, ________ today I feel like drinking tea. A．and B．but C．so D．or 23．—Is everyone here today? —No. Tom is at home ________ he has got a bad cold. A．because B．if C．until D．unless 24．Tom couldn’t sleep last night he drank too much coffee. A．although B．because C．so D．once 25．—Shall we go camping in the park or on the beach? —Either is fine with me. __________ I think the beach will be more fun. A．But B．And C．Or 26．—How do you like songs sung by Liu Huan? —They are wonderful, ________ I can’t hear his words clearly sometimes. A．but B．so C．because D．if 27．Look at the cute penguins! Penguins have wings, ________ they can’t fly. A．and B．so C．or D．but 28．The woman was very tired, ________ she still kept on working. A．so B．but C．and D．or 29．Practice more, ________ you’ll do better in playing the piano. A．but B．or C．because D．and 30．This is Betty ________ she is my friend, ________ she is not in my class. A．and ; and B．but ; and C．and ; but D．but ; but 31．My grandfather is 70 years old, ________ he looks young. He likes sports, ________ he is very healthy. A．but, or B．but, so C．and, because 32．I don’t like drawing, ________ I like my art teacher very much. A．but B．so C．and 33．Joe usually plays basketball after school, ________ he is a football fan. A．because B．but C．or 34．I like taking photos, ________ my cousin doesn’t like it. A．but B．so C．for D．or 35．Our room was big ________ everything was very old. A．but B．because C．about 36．It’s difficult, ________ I can try. A．and B．so C．then D．but 37．I want to go swimming, ________ I’ve got a cold. A．and B．but C．so 38．—Why was he late? —He was late ________ he was ill, not ________ the bad weather. A．because; because of B．because of; because C．because; so 39．Judy likes having the history class, ________ his history teacher is very fun. A．so B．or C．but D．because 40．Teamwork is important ________ it can make our dreams come true. A．so B．because C．but D．or 41．I like English ________ it’s interesting and useful. A．so B．but C．because 42．We don’t keep baby lions as pets ________ they are wild animals. A．if B．after C．because D．before 43．Goldilocks was very hungry _________ she didn’t eat anything for two days. A．because B．so C．but D．or 44．The animals are losing their homes ________ people cut down many trees. A．so B．because C．and D．but 45．Lucy likes penguins very much ________ they are very cute. A．and B．so C．or D．because 46．Dr. Lee usually walks to work ________ his home is close to the hospital. A．and B．but C．because 47．My sister doesn’t eat hamburgers ________ she doesn’t want to be fat. A．or B．so C．but D．because 48．I have a basketball, ________ my brother doesn’t. A．but B．and C．so D．or 49．I’d love to go to the theatre tonight, ________ I am too busy. A．because B．or C．but D．and 50．We are making a big cake ________ it’s Dad’s birthday today. A．because B．until C．once D．if 学科网（北京）股份有限公司 $$