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)

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