問題詳情

10. Sue: Where’s Alex, I wonder? We _____fifteen minutes ago.
(A) may have started
(B) could have started
(C) ought to have started
(D) could start

參考答案

答案：[無官方正解]
難度：非常困難0
統計：A(0),B(2),C(1),D(0),E(0)