16. The big tree _____ by my brother ten years ago. (2000甘肃)

A. was planted 　B. planted 　C. has planted 　D. was planting

15. By _____ was the book _____?

A. who; wrote B. whom; write C. whose; writing D. whom; written

14. Will the job _____ in ten minutes?

A. finish 　B. be finish 　C. be finished 　D. finished

13. A present _____ me by my friend on my birthday.

A. is giving 　B. was given to 　C. is given for 　D. will give to

12. The young tree _____ the stick.

A. should be tied to B. must be tied by C. should tie to D. can be tied with

11. In 1620, about half the USA _____ forests.

A. was covered B. was covered by C. were filled with D. covered with

10. When _____ the Party _____?

A. was; founded B. was found C. is; found D. has; been founded

9. The window of this room _____ once a week.

A. has been cleaned 　B. is cleaned 　C. are cleaned 　D. are cleaning

8. When _____ the Party _____?

A. is being 　B. was being 　C. has been 　D. should be

7. _____ trees usually _____ in April?

A. Have; planted B. Are; planted C. Do; plant D. Were; planted