問題詳情

The shopping mall has been running a very popular car valet service _____ two months.
(A)before
(B)for
(C)since
(D)in

參考答案

答案：B
難度：簡單0.760736
統計：A(6),B(124),C(14),D(15),E(0)

用户評論

【Jy-shan Lou】評論

has + pp. = for 一段時間