99. Mr Li, though in bad health, is always well prepared _____ students attend his lecture.

A. in order that　　 B. so far as　　 C. whoever　 　　D. however many

98. --The experiment is of particular importance.

--I see. We'll carry on with it _____ we can get enough money.

A. until　　　 B. unless　　　　 C. whether　　　　 D. however

97. --Why did he let you repeat his instruction time and time over?

　 --_____ that I remember what was ______ after he went out.

　　 A. To make sure; to do　　　　　 　B. Making sure; to be done

　　 C. To see to it; to be done　　　 　D. Seeing to; done

96. --How fortunate Mr Li was _____ to the USA for further study!

　 --Have you heard from him lately?

　　 A. sent　　 B. to have sent　　 C. having been sent　　 D. to have been sent

95.--Are you satisfied with what she's done?

　 --Not a little. It couldn't be ______.

　　 A. any worse　　 　B. any better　　 　C. so well　　　 D. so bad

94. _____ different life today is ______ what it was 20 years ago!

　　 A. What a; with　　　 B. What a; from　　　 C. How; from　　 　D. How; with

93. How did it _____ that you failed to ______ in time yesterday?

　　 A. come up; turn over　　　　　　 B. come about; turn up

　　 C. come over; turn off　　　　　　 D. come up; turn down

92. Will you see to _____ that my children are taken good care of while I am away ?

　　 A. me　　　　 B. yourself　　　 C. them　　　　　 D. it

91. They have cut us off because we haven't paid the phone bill ____on time.

　　 A. due to be paid　　 B. due to pay　　　 C. is paid　　　 D. should be paid

90. It's likely that an accident will _____ the march.

　　 A. show during　　　 B. break out to　　 C. be taken place in　　 D. happen on