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Such crimes may be so complex that months or years go by before anyone them.A.di

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Such crimes may be so complex that months or years go by before anyone them.A.di

Such crimes may be so complex that months or years go by before anyone ________ them.

A.discovered

B.would have discovered

C.will discover

D.discovers

试题答案

D

句意:这样的犯罪可能非常复杂以至数月或数年的时间过去才会被人发现。before引导的时间状语从句用一般现在时表将来。