问题
选择题
—Tom came to work last Friday ,but no one has seen him since.
— he have had an accident ?
A．Should
B．Must
C．Might
D．Could
答案
答案：D
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—Tom came to work last Friday ,but no one has seen him since.
— he have had an accident ?
A．Should
B．Must
C．Might
D．Could
答案：D