从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

1. One-third of the area _____ covered with green trees. About seventy percent of the trees _____ been planted.

   A. are; have      B. is; has       C. is; have       D. are; has

2. The number of teachers in our college _____ greatly increased last term.　
A number of teachers in this school _____ from the countryside.

   A. was; is        B. was; are      C. were; are      D. were; is

3. What _____ the population of China? One-third of the population _____ workers here.

   A. is; are         B. are; are      C. is; is        D. are; is

4. Not only he but also we _____ right. He as well as we _____ right.

   A. are; are        B. are; is       C. is; is        D. is; are

5. What he’d like _____ a digital watch. What he’d like _____ textbooks.

   A. are; are        B. is; is       C. is; are        D. are; is

6. He is one of the boys who _____ here on time. He is the only one of the boys who _____ here on time.

   A. has come; have come  

   B. have come; has come

   C. has come; has come

   D. have come; have come

7. Either you or he _____ interested in playing chess. _____ you or he fond of music at present?

   A. are; Are      B. is; Are       C. are; Is         D. is; Is

8. Many a professor _____ looking forward to visiting Germany now. Many scientists _____ studied animals and plants in the last two years.

   A. is; have      B. is; has       C. are; have      D. is; are

9. A knife and a fork _____ on the table. A knife and fork _____ on the table.

   A. is; is        B. are; are       C. are; is         D. is; are

10. Her family _____ much larger than mine four years ago. Her family _____ dancing and singing when I came in last night.

    A. were; was       B. was; were    C. was; was      D. were; were

11. How and why Jack came to China _____ not known. When and where to build the new library _____ not been decided.

    A. is; has        B. are; has      C. is; have       D. are; have

12. Now Tom together with his classmates _____ football on the playground.

    A. play        B. are playing      C. plays        D. is playing

13. Two hundred and fifty pounds _____ too unreasonable a price for a second-hand car.

    A. is           B. are             C. were           D. be

14. All but Dick _____ in Class Three this term.

  　A. are          B. is           C. were         D. was

15. Soon after the earthquake, every man, woman and child _____ about it.

    A. were talking               B. was talking   

    C. talk                       D. talks

16. We each _____ strong points and each of us on the other hand _____ weak points.

    A. have; have                B. has; have    

    C. has; has                  D. have; has

17. My friend and classmate Paul _____ motorcycles in his spare time.

    A. race       B. races         C. is raced        D. is racing

18. There _____ a pen, two pencils, and three books on the desk.

    A. are        B. is            C. has            D. have

19. The factory, including its machines and buildings, _____ burnt last night.

    A. is         B. are          C. were           D. was

20. Climbing hills _____ of great help to health.

    A. is         B. are           C. were           D. be

21. Time and tide _____ for no man.

    A. wait        B. waited        C. is waiting        D. has waited

22. The injured in the tsunami _____ good care of by some medical teams.

    A. is taken   

    B. are being taken   

    C. are taking     

    D. is being taken

23. It is not J. K. Rowling but her works that _____ us excited.

    A. makes        B. is made        C. make        D. are made

24. On the closet _____ a pair of trousers his parents bought for his birthday.

    A. lying         B. lies         C. lie        D. is laid

25. Each man and each woman _____ asked to help when the fire broke out.

    A. is            B. was           C. are          D. were

26. About 60 percent of the students _____ from the south; the rest of them _____ from the north and foreign countries.

    A. are; is        B. is; is       C. is; are        D. are; are

27. If you want to learn about Liu Xiang, let me know， _____ you?

    A． don’t        B． will        C． shall        D． do

28. Mrs. Black doesn’t believe so many people are suffering from this tsunami, _____?

    A. aren’t they               B. are they   

    C. doesn’t she               D. does she 

29. I don’t think he could have done such a stupid thing last night, _____?

    A. do I         B. could he         C. did he         D. has he

30. --- Why is Tom absent?

    --- He must be sick, _____?

    A. isn’t he        B. must he       C. is he       D. mustn’t he  

31. It’s the first time that she has been to the United States, _____?

    A. isn’t she                 B. isn’t it   

    C. hasn’t she                D. hasn’t it   
32. When the disaster struck, many people had no time to escape being killed, _____?

    A. didn’t they               B. did they 

    C. did it                     D. didn’t it

33. Nowadays in China some officers are unfit for their positions, _____?

    A. are they                   B. aren’t they  

    C. don’t they                D. do they          

34. Protecting the South China tiger from dying out takes a long time, _____?

    A. doesn’t it                B. don’t they    

    C. does it                    D. do they

35. You’d better find some information about Nike’s “Chamber of Fear” advertisement, _____?

    A. wouldn’t you             B. had you 

    C. hadn’t you               D. should you

36. Most students used to listen to their teachers in class and completely obey their teachers, _____?

    A. used they                 B. weren’t they   

    C. didn’t they              D. did they

37. I am very excited to know “S.H.E.”is going to sing at the CCTV Spring Festival Soiree, _____?

    A. aren’t I                 B. am not I 

    C. aren’t you               D. are you

38. I wish all the Chinese citizens to remember the Nanjing Massacre forever, _____?

    A. don’t I        B. can I        C. may I       D. may you

39. Let’s take action together to make our city more beautiful, _____?

    A. won’t we       B. don’t we     C. shall we      D. won’t you

40. There’s not much news about the missing mountain climbers in today’s newspaper, _____?

    A. isn’t it      B. is it      C. isn’t there    D. is there

41. So you don’t want to enter for the 2005 college entrance examination, _____?

    A. don’t you                B. do you  

    C. won’t you                D. will you

42. What a terrible tsunami, _____?

    A. aren’t they             B. are they 

    C. isn’t it                D. is it

43. Everyone will believe New FIFA World Footballer Ronaldinho is a fighter against racism, _____?

    A. will he                 B. won’t everyone   

    C. won’t he               D. will they

44. The rescue team must have searched for the missing visitors two days ago, _____?

    A. mustn’t they            B. haven’t they 

    C. didn’t they             D. hadn’t they

45. Something about stopping the strike will have to be done, _____?

    A. won’t it       B. will it       C. has it         D. does it