问题
选择题
She didn't answer the phone.She ___ be asleep.
A．couldn't
B．mustn’t
C．might
D．had to
答案
答案：C
might也许; couldn't意为:不可能; mustn’t意为:不可以/一定不; had to意为:不得不,必须.
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She didn't answer the phone.She ___ be asleep.
A．couldn't
B．mustn’t
C．might
D．had to
答案：C
might也许; couldn't意为:不可能; mustn’t意为:不可以/一定不; had to意为:不得不,必须.