选A
must在这里表判断,意思是一定是
而mustn't只有一个意思,那就是禁止
can在这里也表判断,意思是可能
那么can't的意思也就是不可能
Look!The man at the gate _____ be our headmaster .He is always standing there every morning
Look!The man at the gate _____ be our headmaster .He is always standing there every morning
No,it _____be him.He is holding a meeting in the office now.
A.must;can't
B.must;mustn't
C.can;can't
D.can;mustn't
选哪一个 为什么
No,it _____be him.He is holding a meeting in the office now.
A.must;can't
B.must;mustn't
C.can;can't
D.can;mustn't
选哪一个 为什么
英语人气：413 ℃时间：2019-10-17 05:52:50
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