51.   It ________ nearly two weeks _________ I had received his letter.
A. is, that       B. was, that    C. is, since     D. was, since
52. It is five years since my dear aunt __________ here.
A. left     B. has left       C. is left  D. had left
53.   Nobody in _________ right senses would play such a silly joke.
A. their    B. his      C. her     D. one’s
54. -May I speak to Lucy?
-This is ________ speaking.
A. her     B. she     C. she’s   D. hers
55. I forgot Tom’s address. But I found his telephone number in the _________.
A. phone books      B. book of phone    C. phone’s book     D. phone book
56.   He said that he watched TV every ________ day.
A. another      B. three   C. the second  D. other
57.   We are going to be on our holidays _________.
A. in three days’ time     B. after 3 days       C. three days later  D. in three day’s time
58. Look at these clouds, ________.
A. It’ll rain      B. It’s going to rain C. It’ll be raining     D. It is to rain
59. Nobody knows what _______ happen next.
A. is to    B. is going      C. is about to  D. are to
60.   China should do _________ best to be a strong and modern country.
A. his      B. its       C. her     D. our