题目内容
( ) 2. ―Look!It be Jack on the playground.
―It be him. Because I saw him enter the school library just now.
A. must,mustn't B. can,can't
C. may,mustn't D. must,can't
2. D must表推测，意为"一定是"。但这里表示"不可能"，只能用can't。
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题目内容
( ) 2. ―Look!It be Jack on the playground.
―It be him. Because I saw him enter the school library just now.
A. must,mustn't B. can,can't
C. may,mustn't D. must,can't
2. D must表推测，意为"一定是"。但这里表示"不可能"，只能用can't。