The students are to hand in the exercises before class.A. wishedB. hopedC. enjoyedD. prom

发布时间：2020-08-14 23:45:47

The students are      to hand in the exercises before class. 
A. wished
B. hoped
C. enjoyed
D. promised

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(答案→)A. wished
B. hoped
C. enjoyed
D. promised
解析：把句子还原成主动语态,便可以看出是不定式的复合结构,而只有A可以这样用.
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