—Li Lin took the 8:00 bus to Fuzhou this morning.
—Really? He a fast train. It’s much more fortable to travel by fast train.
A. could have taken
B. should take
C. must have taken
D. can take
网友回答
(答案→)A. could have taken
B. should take
C. must have taken
D. can take
解析：句意：--李林今天早晨做8点的公共汽车去福州。--真的吗？他本来能做快速列车的，做快车会更舒适的。could have done指过去本来能做的事没有做；should do指现在或将来应该做；must have done指过去一定做了某事；can do指现在能够做某事。根据句意故选A。