—Did you visit the museum last week ?—No we but we spent too much time shopping.A. coul

问题补充：

—Did you visit the museum last week ?

—No, we , but we spent too much time shopping.

A. could have

B. could

C. must have

D. must

答案：

A. could have

B. could

C. must have

D. must

解析：句中we 是we could have visited the museum last week.的省略形式。