来自李罗文的问题
【Theflightwouldtakeoffat11o'clockbutitwasn'tyetnineo'clock____Dannyarrivedattheairport.A.untilB.whileC.whenD.before为什么不可以选A?】
Theflightwouldtakeoffat11o'clockbutitwasn'tyetnineo'clock____Dannyarrivedattheairport.
A.untilB.whileC.whenD.before
为什么不可以选A?
