問題詳情
We need to convince our customers that our services are worth _____.
(A) to pay
(B) pay for
(C) to pay for
(D) paying for
參考答案
答案：D
難度：適中0.66
統計：A(5),B(1),C(9),D(33),E(0)
用户評論
【Lovely Pei】評論
be worth + N/ V-ing : 用主動表被動be worthy + of being p.p. : 用被動表被動