問題詳情

61. I _________ the lesson last night, but I was too busy to do so.
(A) should have previewed
(B) should preview
(C) might preview
(D) may be previewing

參考答案

答案:A
難度:適中0.641493
統計:A(739),B(363),C(39),D(11),E(0)

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