I for Beijing in a few days. Do you know when the earliest plane ?A. leaves takes offB.

问题补充：

I for Beijing in a few days. Do you know when the earliest plane ?

A. leaves, takes off

B. is leaving, is taking off

C. am leaving, takes off

D. leave, is taking off

答案：

A. leaves, takes off

B. is leaving, is taking off

(答案→)C. am leaving, takes off

D. leave, is taking off

解析：考查将来时。本题第一空用现在进行时表示将来时，表示按照安排要发生的事情，且动词要是一些表示位置变化的动词。第二句使用一般现在时代替将来时，指按照机场，车站的时间表要发生的事情。句意：几天以后我要去北京，你知道最早的飞机什么时候离开吗？巩固C正确。