問題詳情

156. If the air-traffic controller’s strike was to occur, could the seminar be postponed? Please call me at your earliest convenience.
(A)was to
(B)could 
(C)be postponed
(D) at

參考答案

答案：A
難度：適中0.466667
統計：A(7),B(0),C(5),D(2),E(0)