人教 八下 Unit8 单元过关检测（无答案）

八下 Unit8 单元检测 一 单项选择（每题2分，共20分） ( )1.--Do you know that the earth is home to_________ animals and plants? --Yes ,I know.So we should try to do something useful________ the earth. A.million,to protect B. millions,protect C.million of,protecting D.millions of, to protect ( )2.---He promised to pick me up at the school gate.However,he ______here yet. ---I think he _______ forget about it. He went________yesterday by plane. A. hasn’t arrived, may ,abroad B. hasn’t arrived, must, to abroad C. didn’t arrive, can, abroad D. doesn’t arrived, should, to abroad ( )3.---How long______ you ______ here? ---For 3 days.I _________ here the day before yesterday by train. A. have, stayed , have come B. have, stayed, came C. did, stay , have come D. do, stay , came ( )4.--Your shoes are so old.Why don’t you buy a new pair