問題詳情

21. My neighbors are Mr. and Mrs. Brown. I _____ them ever since I was a child.
(A) knew
(B) have known
(C) know
(D) had known

參考答案

答案:B
難度:簡單0.760563
統計:A(3),B(54),C(0),D(10),E(0)

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