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用must,can't改句子I'msurethatheisamiddleschoolteacher.I'msurethatsheisnotplayingthepiano.

题目详情
用must,can't改句子
I'm sure that he is a middle school teacher.
I'm sure that she is not playing the piano.
▼优质解答
答案和解析
He must be a middle school teacher.
She can't be playing the piano.
或者:
I'm sure that he must be a middle school teacher.
I'm sure that she can't be playing the piano.