问题 选择题
   is to be done is   to carry it out smoothly since the decision has been made.
A.What; howB.Where; how
C.When; whatD.Where; what
答案

A

题目分析:本题考查主语从句。句意: 既然已经做出了决定, 要做的就是如何去顺利完成。根据句意“需要做的……”用what; 语境“如何顺利完成……”用how, 故答案为A。

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