问题
选择题
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
答案：D
题目分析：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？