We______ for him because he never camE.
A.needn't wait
B.shouldn't have waited
C.mustn't wait
D.mustn't have waited

A.A.needn't
B.shouldn't
C.mustn't
D.mustn't

【参考答案】

B
解析：这句话的意思是说，我们本不应该等他，因为他根本没来。从原因状语从句中可看出这件事情已经发生了，实际上是......

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