问题
选择题
Mary is so wet. She _______ in the rain.
A．must be caught
B．must have been caught
C．should have been caught
D．can have been caught
答案
答案：B
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Mary is so wet. She _______ in the rain.
A．must be caught
B．must have been caught
C．should have been caught
D．can have been caught
答案：B