未分类题

The Gadfly insisted that the work __________ be finished by the middle of June.

A.must
B.could
C.should
D.might


【参考答案】

C 解答参考:C insist 作'坚持要求'讲时,必须使用虚拟语气,即(should)+动词原形。insist 作'坚......

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