1 . 单句改错，每句只有一处错误，只涉及一个单词的增加、删除或修改
1. You could turn to your teacher if you are in the trouble.
2. Police are good people, but they can’t do anything.
3. He found his son trapping under the fallen building, feeling very worried.
4. Two churches completely destroyed by fire last night in northeast Mississippi.
5. It was the first time that the Chinese planted vegetables in space.
6. After graduation, he returned to the small hometown which he grew up.
7. The young lady has been devoted to teach the deaf children.
8. Burying in doing research in the lab, he has no time for a holiday.
9. He wrote many children’s books, nearly half of them were published in the 1990s.
10. The places outside the towns where they were sent to live was the poorest parts of South African.