----Thebossexpressedhissatisfactionwithyourwonderfulwo...

问题详情：

 ----The boss expressed his satisfaction with your wonderful work.

----Really? I ____ better under more favorable conditions.

A. could do                  B. should do           C. must have done     D. could have done

【回答】

知识点：虚拟语气与情态动词

题型：选择题