问题
选择题
—Must we take off our shoes before coming in?
—No, you_____.[ ]
A. mustn't
B. don't have to
C. won't
D. must
答案
答案：B
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—Must we take off our shoes before coming in?
—No, you_____.[ ]
A. mustn't
B. don't have to
C. won't
D. must
答案：B