??—Do you know ______ Tom was punished by his father?

—That was ______ he refused to go to school.

       A. why; because     B. when; why        C. how; when               D. why; why

31. Hainan province lies ______ the south of Guangdong province, which is ______ the south of China.

A. in; on               B. on; in                C. to; in                       D. to; on

The wrong you have done to him is terrible, for _____ you should make an apology to him, I think．

A．that            B．which       C．what           D．this

Carol said the work would be done by October, _______ personally I doubt very much．

A．it             B．that   C．when          D．which

The school _____ my father teaches is a world-famous one, _____ was set up 100 years ago．

A．where; which         B．which; which   C．/; where       D．where; that

So difficult ______ it to live in an English-speaking country that I determined to learn English well.  

A. I have felt                      B. have I felt                       C. I did feel                          D. did I feel

Every possible means _____ to prevent the air pollution, but the sky is still not clear.  

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

He left a message _____ you should call back this afternoon for the doctor’s appointment.

  A. until                   B. if                                       C. when                               D. that

The novel ______ at a low price in second-hand bookstore is very interesting.

  A. to be buying              B. to buy                              C. for buying                       D. bought

Victor apologized for _____ to inform me of the change in the plan.  

  A. his being not able    B. him not to be able        C. his not being able         D. him to be not able