30. I _use a clock to wake me up because at six o'clock each morning the train comes by my hous

問題詳情

30. I _use a clock to wake me up because at six o'clock each morning the train comes by my house.
(A)couldn't
(B) mustn't
(C) shouldn't
(D) needn't

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)