–Excuse me, Madame. Is this plane take off soon?
---Oh, yes. In five minutes.
A. about to
B. starting to
C. beginning to
D. to
网友回答
A. about to
B. starting to
C. beginning to
(答案→)D. to
解析：考查将来时，be about to不能和具体时间连用，可以和when连用，be to do也可以表示将来时，句意：对不起，夫人，这班飞机很快就要起飞吗？是五分钟以后，选D。