75.That they were wrong in these matters _____ now clear to us all.

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

74.Although the first part of the book is easy， the rest ______.

A. are difficult　　　　　　　　　　　　　　　　 B. has proved difficult C. is supposed difficult　　　　　　　　　　　　 D. have been found difficult

73.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

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

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

71.It ____I who _____leaving for London.

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

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

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

69.About 20 percent of the work ____done yesterday.

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

68.Ten thousand dollars _____quite a large sum.

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

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

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

66.Most of his spare time ____spent in reading.

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