Loudspeakers were fixed in the hall so that everyone _______ an opportunity to hear the sp
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Loudspeakers were fixed in the hall so that everyone _______ an opportunity to hear the speech.
A.ought to have
B.must have
C.may have
D.should have
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正确答案:D
解析:so that引导的目的状语从句,从句中常用may。但是本句主句用的是过去时态,所以从句;也应该用相应的表示过去的时态,只有should have符合要求。
