問題詳情

24. We ____ be too careful when we are abroad because it’s hard to predict what may happen to us.
(A) should
(B) may
(C) mustn’t
(D) can’t

參考答案

答案:D
難度:困難0.241071
統計:A(56),B(15),C(11),D(27),E(0)

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