—Jack took the 8:30 bus to Guangzhou this morning.
—Really? He 8:20 Express. It is much more fortable and faster to travel by train.
A. could have taken
B. would have taken
C. need have taken
D. must have taken
网友回答
(答案→)A. could have taken
B. would have taken
C. need have taken
D. must have taken
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