問題詳情

18. Passengers ________ tickets 2 weeks in advance will be given an early-bird discount, plus an opportunity towin an i-Pad.
(A) purchasing
(B) purchased
(C) who purchasing
(D) purchase

參考答案

答案：A
難度：適中0.647059
統計：A(11),B(1),C(4),D(0),E(0)