John for London this afternoon and his flight off at 18:20.A. is about to leave; will ta

问题补充：

John for London this afternoon and his flight off at 18:20.

A. is about to leave; will take

B. is leaving; takes

C. is going to leave; is taking

D. is to leave; is about to take

答案：

A. is about to leave; will take

(答案→)B. is leaving; takes

C. is going to leave; is taking

D. is to leave; is about to take

解析：考查将来时的表达法。现在进行时表示将来时指事先安排好要发生的事情。用一般现在时表示将来时指按照时刻表上的安排要发生的事情。故本题第一空用现在进行时，第二空用一般现在时。句意：John今天下午要去伦敦，他的航班在18:20起飞。故B正确。