So carefully ____ the performance that it went smoothly in the competition.

A. have we prepared
B. had we prepared
C. we have prepared
D. we had prepared
相關(guān)習(xí)題

科目：高中英語 來源：河北省期末題 題型：單選題

So carefully ____ the performance that it went smoothly in the competition.
[     ]
A. have we prepared
B. had we prepared
C. we have prepared
D. we had prepared

查看答案和解析>>


同步練習(xí)冊答案