题目内容

Ladies and gentlemen, please fasten your seat belts. The plane _____.
A．takes offB．has taken offC．took offD．is taking off.
D
考查时态。句意:先生们，女士们，请系好安全带。飞机就要起飞了。Take off是表位置转移的词，经常用现在进行时表将来。所以选D。
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