問題詳情

16. All of us wonder why they are so late as they ______ here early this morning.
(A) might be
(B) must have been
(C) needn't be
(D) should have been

參考答案

答案:D
難度:適中0.545455
統計:A(2),B(11),C(8),D(30),E(0)

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