—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：

(答案→)A. could have

B. could

C. must have

D. must

解析：考查情态动词。--上个星期你们参观博物馆了吗？--没有，我们本可以去的。但是我们在购物上花了太多的时间。本可以做某事：could have done.