1 . 单句改错
1. Hardly had I left my house while it began to snow.
2. The rescue services are still trying to put up the fire.
3. We find difficult to talk to our guests about the recent events.
4. The workers were made work 12 hours a day in the past.
5. The student apologized to the teacher for be late for class.
6. She was terrifying at the thought of being alone.
7. The police tried their best to search the missing boy.
8. After graduation, she reached a point in her career which she had to decide what to do.
9. The world’s population has grown to more than six times that it was in 1800.
10. Altogether King has written more than 30 novels, many of them have been made into films.

2 . 单句改错
1. The harm the modern farming methods have done on the countryside is considerable.
2. She shaded her eyes by the sun with her hands.
3. Words came that the mayor would soon visit our school, which excited us.
4. He was very careless that he didn’t pass such an easy exam.
5. Time permitted, I’d like to go on a trip to the Great Wall.
6. I think that he explained at the meeting remains unreasonable.
7. No doubt she will be late, It’s typical for her to keep the other guests waiting.
8. My father lay still in bed and was deep into thought.
9. I think she has many good qualities beside being very beautiful.
10. He made that a rule to exercise regularly.
11. Last Sunday, Jack wanted to go to the cinema, when his cousin would rather stay at home.
12. It has been three years before he lived here.
13. What shall we do for the remained time?
14. Bathing in the sunshine, we jumped and cheered with joy.
15. I saw his eyes fixing on me in curiosity.