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

A. must have studied     B. might study

C. should have studied   D. would study

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

A must have studied      B might study

C should have studied       D would study

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

A. must have studied                                   B. might study

C. should have studied                           D. would study

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

A. must have studied            B. might study          C. should have studied        D. would study

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

   A. must have studied                                                    B. might study             

   C. should have studied                                                D. would study