"Ladies and gentlemen, please fasten your seat belts.The plane ________."

A. takes off
B. is taking off
C. has taken off
D. took off

"答案B
现在进行时可用来表示按计划或安排要进行的动作,常与表示将来的时间状语连用。这种用法比较生动,给人一种期待感。根据所提供的情景“Ladies and gentlemen, please fasten your seat belts.”可判断出飞机马上要起飞了。"
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第1个回答  2018-10-15
选B.is taking off