--Attention,please.Theplanehastobe

问题详情：

 -- Attention, please. The plane has to be ______ because of the heavy rain.

   -- Oh, bad luck! We have to wait now.

   A. put on         B. put off           C. put up            D. put away

【回答】

B

知识点：动词和动词短语

题型：选择题