1. D (to)
2. A (omit “a”)
3. D (fall)
4. B (determination)
5. C (major causes)
6. B (examining)
7. B (is)
8. B (progress)
1. No matter how poor the Pikes are, they lead an honest life.
2. She used to sing better than (she does) now.
3. He never has enough money.
4. A thermometer is used to measure temperature./ A thermometer measures temperature.
5. Contrary to its harmless appearance, the fish is quite dangerous./ Contrary to the harmless appearance of the fish, it is quite dangerous.
6. The last thing you should do is (to) phone the police.
7. So many people were attracted by the presidential visit that all traffic came to a standstill.
8. People find it hard to live in the area with such pollution.
9. I can’t put up with all the noise you are making any longer.
10. It was my fault that we did not win the game.
11. Tim does not take after his father at all.
12. We could just make him out in the crowd.
13. I have no objection to you/your leaving now.
14. My advice is that you had better not come to class for a few days.
15. After a long chase, the police finally managed to arrest the thief/ was finally able to arrest the thief.
16. So cold was the water that the children couldn’t swim in it.