Mr. Black for Shanghai in a few days. Do you know when the earliest plane on Sunday?A. l

问题补充：

Mr. Black for Shanghai in a few days. Do you know when the earliest plane on Sunday?

A. leaves; takes off

B. leaves; is taking off

C. is leaving; is taking off

D. is leaving; takes off

答案：

A. leaves; takes off

B. leaves; is taking off

C. is leaving; is taking off

(答案→)D. is leaving; takes off

解析：第一空用进行时表将来时；第二空用一般现在时表示将来时，因为飞机航班是有固定时间表的。所以用一般现在时表将来时。句意：Black先生几天后要去上海。你知道星期天最早的航班是什么时候吗？