人教版高一英语----动词时态语态单句改错精炼30题（有答案）

人教版英语 动词时态和语态改错专练 下面每个句子中有一处错误,请把它改正过来 1. Jack was in the library on Friday, but no one has saw him ever since. 2. The doctors came to help because they have heard about the accident. 3. The accident was happened when the children were swimming in the river. 4. As we all know, Diao Yu Island has been belonged to our country since the Second World War. 5. The students were writing busily when Miss. Brown went to get a book she left in the classroom. 6. It is five years since we separate. 7. Is it possible to combine with the two parties? 8. His telephone number is easy to remembered. 9. Seldom does he fall off when he first learnt to ride a bicycle. 10. Years ago we didn't know this, but recent science showed that people who don't sleep well soon get ill. 11. As the disease