Change into passive voice

làm giúp mik nha
 
----- Nội dung dịch tự động từ ảnh -----
UNIT 2: PASSIVE VOICE
A. Change into passive voice.
1. The teacher corrects our exercises at home.
2. Ali's absence worried his mother.
3. They are building several new schools in our town.
4. We have made great progress in industry, science and medicine.
5. Sam killed a lion last week.
6. You must hand in your report before the end of this month.
7. I had just finished the job when the factory closed.
8. No one has opened that box for the past hundred years.
9. Are you going to mail these letters soon?
10. He should have finished the report yesterday.
11. Scientists began to carry out researches on SIDA two years ago.
12. They say that he is the richest man in our town.
13. I can assure you I will arrange everything in time.
14. We are to pity rather than despise these homeless boys.
15. We haven't moved anything since they sent you away to cure you.
B. Change into passive voice.
1. She fell into water because somebody pushed her.