题目内容
—Is Mr. Hu in the reading room?
—No, he _____ be there. He has gone to Tianjin.
—No, he _____ be there. He has gone to Tianjin.
[ ]
A. mustn't
B. needn't
C. won't
D. can't
B. needn't
C. won't
D. can't
D
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