问题
选择题
I _______ Beijing in a few days. Do you know when the earliest plane ________?
A．leaves; takes off
B．is leaving off; is taking off
C．am leaving for; takes off
D．leave; is taking off
答案
C
题目分析：考查时态：句意：几天后我要动身去北京，你知道最早的一班航班是什么时候起飞？第一空用现在进行时表示即将，马上做，第二空用一般现在时，表示“按时刻表即将做”，选C。