问题
选择题
It's warm (暖和) here. Take _____ your hat, please. [ ]
A. of
B. off
C. to
D. down
答案
D
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It's warm (暖和) here. Take _____ your hat, please. [ ]
A. of
B. off
C. to
D. down
D
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，m=0
，m=