問題詳情

16. The man sitting next to me on the plane was very nervous. He _______ before.
(A) hasn’t flown
(B) didn’t fly
(C) hadn’t flown
(D) wasn’t flying

參考答案

答案:C
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

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