問題詳情

19.It was not until Ed received Al’s letter ________ he had moved to Iran.
(A)he did know
(B)did he know
(C)that he knew
(D)does he know

參考答案

答案:[無官方正解]
難度:適中0.5
統計:A(0),B(5),C(2),D(0),E(0)

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