問題詳情
50.________ allowing people to buy single shoes, once a season the single shoes bank gives unwanted single shoes to members for free.
(A) Before
(B) On the contrary
(C) By taking chance
(D) In addition to
參考答案
答案：D
難度：適中0.416667
統計：A(8),B(8),C(14),D(25),E(0)