– I’m told that you are leaving for Beijing.         – Who _____ so?

       A. said                         B. had said            C. says                         D. say

– How long _____ in this job?             – Since 1990.

       A. were you employed                                      B. have you been employed

       C. have you employed                                      D. will you be employed

Because of the sharp drop of birth rate, the number of students sitting the college entrance exams ______ all the time

       A. is declining              B. has declined      

       C. have been declined    D. were declining

When Bill Gates decided to stop schooling and created Microsoft in 1975, he ______ law at Harvard University.

       A. studied       B. had studied C. was studying      D. would study

The prices of houses ______ because the demand of them become more and more great.

       A. are rising          B. rise                          C. had risen           D. have been risen

----Do you have any problems if you ______ this job?

       ----Well, I’m thinking about the salary…

       A. offer                 B. will offer                 C. are offered        D. will be offered

So far this year, no measures _______ against cruelty to animals despite their protest in the

   newspaper.

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

Once harm ______ to the environment, it takes years to have the system recovered.

A. does                   B. is done                 C. will be done        D. be done

Our monitor, who by then ______ admission to Fudan University, decided to do some part-time jobs to gain more practical experience.

A. gained                      B. was gaining        C. has gained        D. had gained

Ted and his friends established a website offering useful information about thunderstorms ______ similar accidents happening.

A. prevent                      B. preventing            C. to prevent           D. prevented