A. to open B. open C. opening D. opened

二、根据句子意思，用括号中所给词的正确形式填空，每空填一词。

1. As a student, we should be (activity) when helping people to protect wild animals.

2. I think your answer to the math problem is (correct). You should work it out in another way.

3. He was worried about the safety of those mountain (climb) in this sudden bad weather.

4. The two words are spelled (difference), but they have the same meaning.

5. In my class, my home is the (far) from our school.

6. If you throw rubbish everywhere in the park, you will be (welcome).

7. Now, most schools in our country are (mix) schools.

8. The more sports you do, the (healthy) you will be.

9. Xiao Shenyang has many ways to make his performances (excite).

10. Look! How (angry) John is looking at his son!

11. I can't believe that Mrs Wang's seven-year-old daughter can make a home page (she).

12. I don't know why I can't see as (clear) as I used to be.

13. She looks much (health) than before because she takes exercise every day.

14. This kind of computer is (wide) used in our country.

15. Many (travel) come to visit the Great Wall every year.

16. Is your cousin one of the best fashion (design) in the city?

17. Don't smoke, please. It's (harm) to your health.

18. It is a (use) CD, so I have never used it on the computer.

19. Tom and Mary got (marry) in 2002 and they have lived happily since then.

20. The computer is becoming more popular and is used often in our (day) life.

三、根据句意及汉语提示，写出各单词的正确形式，每空填一词。

1. She was (倒霉) to catch a cold on the first day of her holiday.

2. He is such a (不诚实的) person that no one likes to talk with him.

3. Thank you for (借给) me your dictionary. I will return it to you tomorrow.

4. Jim is a top student in our class and he (很少) makes mistakes in tests.

5. Our teacher always thinks of good ways to make his classes (活泼).

6. What kind of (感受) do you have when you are praised?

7. (数百万) of animals die every year because of the environment pollution.

8. Our teacher always (带着) a smile on her face when she gives us a lesson.

9. Thank you for helping look after my house when I was (离开).

10. From the (八) floor of the hotel you can have a good view o~ the town.

11. When he walked (经过) my desk, he knocked over my books.