Ladies and gentlemen，please return to your seat and fasten your safety belt. Our

题干

Ladies and gentlemen，please return to your seat and fasten your safety belt. Our plane_________.

A．takes off	B．is taking off
C．has taken off	D．will be taking off

上一题下一题 0.4难度单项选择更新时间:2015-04-03 05:35:12

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