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15．Mr．Black _____ for Shanghai in a few days．Do you know when the earliest plane ____on Sunday？（　　）

	A．	leaves； takes off		B．	is leaving； takes off
	C．	is leaving； is taking off		D．	leaves； is taking off

分析布萊克先生幾天后要去上海．你知道星期天最早的航班嗎？

解答答案：B
根據句意可知，布萊克先生打算去上海，故第一空用現在進行時表示將要打算、計劃的事情；句子里如果有固定的時間表來表示航班、列車等出發時可以用一般現在時表示將來．如：take off，leave，come，go等．

點評本題考查現在進行時．除了掌握基本用法之外，考生還需知道一些特殊情況，如：現在進行時表示將要打算、計劃的事情，一般現在時表示將來．

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