问题
选择题
There ia no light in the room. They ___ asleep.
A．should have gone to
B．must be
C．could go
D．might be going
答案
答案：B
must在此表示推测,意思是: 一定,必定.
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There ia no light in the room. They ___ asleep.
A．should have gone to
B．must be
C．could go
D．might be going
答案：B
must在此表示推测,意思是: 一定,必定.