—Did you visit the museum today?
—No. We it, but we spent too much time shopping.
A. could have visited
B. must have visited
C. could visit
D. must visit
网友回答
(答案→)A. could have visited
B. must have visited
C. could visit
D. must visit
解析：考查情态动词的完成式：情态动词+have done的用法，是对过去情况的虚拟或猜测，因为说的是过去情况，首先排除CD项，A. could have visit本可以参观却没有，B. must have visited过去一定参观了，句意：--今天你去了博物馆吗？--没有，我本可以去参观的，但我花了太多时间购物了。选A。