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:B[無官方正解]
難度:非常困難0
統計:A(1),B(8),C(7),D(0),E(0)

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