EX1:Complete the following sentences with proper prepositions:
1.We’ll buy a smaller house when the children have grown up and left home.
2. The computer isn’t working. It broke down this morning.
3. My headaches have been much better since I gave up drinking coffee.
4. I turned down their offer because they weren’t going to pay me enough money.
5. It was not a problem. We looked up his number in the telephone book.
6. Helen takes after her mother in many ways.
7. We need to set up early tomorrow.
8. The plane took off very quickly.
9. Anne’s leaving for London tomorrow morning.
10. Your friend is always complaining about her job.
11. If there was a technical failure, Gagarin might never get back to the Earth.
12. Courses like with or glass engraving provide people for practical skills they can do with their hands.
13.She is famous for her beautiful face and sweet voice.
14. We are all aware of the importance of the environment protection.
15. His opinion is different from mine.
16. If you don’t pay attention __to_______ the teacher, you won’t understand the lesson.
17. I’m not familiar____with his name, but his face seems familiar__with___ me.
18. We were very grateful__to_____ our friends for all of their assistance.
19.No one knew precisely what would happen __to____ a human being in space.
20..How would the mind deal __with____ the psychological tension?