问题
选择题
— Why isn't Cathy here yet?
— She ______ to be picked up at the station.
A．could wait
B．must wait
C．might be waiting
D．can be waiting
答案
答案：C
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— Why isn't Cathy here yet?
— She ______ to be picked up at the station.
A．could wait
B．must wait
C．might be waiting
D．can be waiting
答案：C