问题
Jack took the 8:30 bus to Guangzhou this morning.—Really? He ______ 8:20 Express. It is much more comfortable and faster to travel by train.
A:could have taken
B:would have taken
C:need have taken
D:must have taken
B:would have taken
C:need have taken
D:must have taken
正确答案是：
同类题型
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