--- It took me two hours or so to walk here.
--- But you here in Billy’s car.
A. could have e
B. must have e
C. must e
D. could e
网友回答
(答案→)A. could have e
B. must have e
C. must e
D. could e
解析：考查情态动词。句中could have done本可以。句意：——我花了差不多2个小时走到这儿。——但你本可以坐Billy的小汽车到这儿。