题目：
11. It ____I who _____leaving for London.
…is B. am…is C. is…am D. am…am
12. Not only Tom but also his wife ____fond of watching television.
A. are B. were C. be D. is
13. When and where to build the new factory ____yet.
A. is not decided B. are not decided
C. has not decided D. have not decided
14. Although the first part of the book is easy， the rest ______.
A. are difficultB. has proved difficult
C. is supposed difficultD. have been found difficult
15. That they were wrong in these matters _____ now clear to us all.
A. is B. was C. are D. were
16. Half of his goods ____ stolen the other day.
A. are B. were C. is D. was
17. Mathematics ____the language of science.
A. are B. are going to be C. is D. is to be
18. Each of the students _____ a Chinese-English dictionary.
A. have B. has C. there is D. there are
19. They each ____ a beautiful handkerchief.
A. have B. has C. there is D. there are
20. Between the two rows of trees _____the teaching building.
A. stand B. stands C. standing D. are
【答案解析】
11-15 CDABA 16-20 BCBAB