问题
选择题
Attention, please. The flight has to be ________ because of the thick fog.[ ]
A. put on
B. put off
C. put away
D. put up
答案
答案：B
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Attention, please. The flight has to be ________ because of the thick fog.[ ]
A. put on
B. put off
C. put away
D. put up
答案：B