Though we don’t know what was discussed, yet we can feel the topic_____.

A. had changed        B. will change      C. was changed   D. has been changed

 By the time he realizes he ____into a trap, it’ll be too late for him to do anything about it.

A. walks     B. walked     C. has walked    D. had walked

 If their marketing plans succeed, they ____ their sales by 20 percent.

A. will increase       B. have been increasing          C. have increased    D. would be increasing

 If the weather had been better, we could have had a picnic. But it ____ all day.

A. rained                           B. rains                     C. has rained       D. is raining

 The wet weather will continue tomorrow when a cold front ______ to arrive.

A. is expected           B. is expecting     C. expects    D. will be expected

 —Have you known Dr. Jackson for a long time?

—Yes, since she________ the Chinese Society.

A. has joined          B. joins                         C. had joined                 D. joined

 —Have you got any job offers?

—No. I ______.

A. waited               B. had been waiting              C. have waited              D. am waiting

 We first met on a train in 200We both felt immediately that we ______ each other for years.

A. knew                       B. have known                     C. had known        D. know

 --- I’m sure Andrew will win the first prize in the final.

--- I think so. He ___________ for it for months

A. is preparing      B. was preparing

C. had been preparing    D. has been preparing

 So far this year we ______ a fall in house prices by between 5 and 10 percent.

A. saw       B. see     C. had seen     D. have seen