问题 选择题

I insisted that the boy          his hands before having supper.

A.washes

B.washed

C.had washed

D.(should) wash

答案

答案:D

考查动词insist坚持要求,后跟从句用(should )do ,j句意:我坚持要求这个男孩应该吃饭之前洗手。所以选D。

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