We last night but we went to the concert instead.A. must have studiedB. might studyC. sh

问题补充：

We last night, but we went to the concert instead.

A. must have studied

B. might study

C. should have studied

D. would study

答案：

A. must have studied

B. might study

(答案→)C. should have studied

D. would study

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