11. Most children need encouragement in time of failure __________ they can cheer up again.
A. so that
B. in case
C. because
D. if
12. The little girl showed no anxiety before the competition. She seemed __________ for it pretty well.
A. to have prepared
B. to prepare
C. having prepared
D. to be preparing
13. --Did you find the missing couple in the mountain yesterday?
--No, but we __________ to get in touch with them ever since.
A. have tried
B. have been trying
C. had tried
D. had been trying
14. The Professor in the end decided to give the prize to __________ he believed had a good sense of English.
A. who
B. anyone
C. whoever
D. whomever
15.--Is there any possible way to help them get rid of such a bad habit?
--To tell the truth, it's very hard. But we __________ on this problem.
A. worked
B. had worked
C. are working
D. had been working
16. Nowadays, a graduate with a master's degree __________ fail to find a high-paying job, which discourages a lot of college students.
A. need
B. can
C. will
D. must
17. Jim __________ yet, otherwise he would have telephoned me.
A. mustn't have arrived
B. shouldn't have arrived
C. can't have arrived
D. need not have arrived
18. Had he __________ his promise, he would have made it to Harford University.
A. kept up with
B. come up with
C. looked up to
D. lived up to
19. China has hundreds of islands, __________ the largest is Taiwan.
A. in which
B. to which
C. from which
D. of which
20. The growth of a child is influenced by a number of factors, __________ are beyond our control.
A. most of them
B. most of which
C. most of what
D. most of that
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