31、It isn't quite ( ) that he will be present at the meeting.

　　A. certain

　　B. sure

　　C. right

　　D. exact

　　32、He told her nothing， ( ) upset her.

　　A. that

　　B. for which

　　C. about which

　　D. which

　　33、It's too expensive for me. I can't ( ) it.

　　A. spend

　　B. cost

　　C. pay

　　D. afford

　　34、Would you like me ( ) the radio a bit?

　　A. turning down

　　B. to turn down

　　C. turn down

　　D. turned down

　　35、"I saw Mary in the library yesterday." "You ( ) her， she is still in hospital."

　　A. mustn't have seen

　　B. could not see

　　C. can't have seen

　　D. must not see

　　36、It was difficult for him to buy good shoes because he had such a big ( ) of feet.

　　A. pair

　　B. size

　　C. couple

　　D. number

　　37、Jack works so hard as he dreams ( ) owning his own house soon.

　　A. to

　　B. with

　　C. of

　　D. on

　　38、There are about 70 people ( ) in the accident.

　　A. were killed

　　B. who killed

　　C. killing

　　D. killed

　　39、I suppose I can count ( ) you for help in this matter.

　　A. of

　　B. on

　　C. at

　　D. to

　　40、Watch your step， ( ) you might fall into the water.

　　A. or

　　B. and

　　C. unless

　　D. but