We should do such exercises in the future I think we did yesterday.A. asB. forC. aboutD

问题补充：

We should do such exercises in the future, I think, we did yesterday.

A. as

B. for

C. about

D. than

答案：

(答案→)A. as

B. for

C. about

D. than

解析：此题应选A因为we did yesterday是句子，所以用连词as