問題詳情
29.They _______ on the program for almost one week before I joined them, and now we________it as no good results have come out so far.
(A) had been working; are still working
(B) had worked; were still working
(C) have been working; have worked
(D) have worked; are still working
參考答案
答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)