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

12.　 Not only Tom but also his wife ____fond of watching television.

　　 A.　are　　 B. were　　 C. be　　 D. is

11.　 It ____I who _____leaving for London.

　　 A.is…is　 B. am…is　　 C. is…am　　 D. am…am

10.　 Mr Smith， together with his children， ____arrived.

　　 A.are　　 B. has　　 C. is　　 D. have

9.　　　 About 20 percent of the work ____done yesterday.

　　 A.　are　　 B. is　　 C. were　　 D. was

8.　　　 Ten thousand dollars _____quite a large sum.

　　 A.are　　 B. is　　 C. were　　 D. have

7.　　　 This is one of the best novels that ____appeared this year.

　　 A.have been　 B. has　　 C. had been　　 D. have

6.　　　 Most of his spare time ____spent in reading.

　　 A.　are　　 B. were　　 C. was　　 D. have been

5.　　　 Either you or I _____going to the teachers‘ office after class.

　　 A.　am　 B. is　　　　　　　　　　 C. are　　　　　　　　　　　　　 D. will

4.　　　 Tom as well as two of his classmates _____invited to the party.

　　 A.　was　　　 B. were　　 C. have been　　 D. had been