問題詳情

50. Michael ________ to Europe twice by the time he _________ 15 years old.
(A) has been, is
(B) went, had been
(C) has been, was
(D) had been, was

參考答案

答案:D
難度:非常困難0
統計:A(0),B(0),C(1),D(0),E(0)

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