为什么其他选项不对?If you______be in time for the early bus,be sure to get up before five in the morning.A are to B are about to C are going to D are due to 请问其他几项为什么不对?

Question

为什么其他选项不对?
If you______be in time for the early bus,be sure to get up before five in the morning.
A are to B are about to C are going to D are due to
请问其他几项为什么不对?

Answer 1

are to表示主观打算,符合句意
are about to一般表示计划好了准备做什么,比如I am about to do it tonight.不符合句意
are going to不对的理由同B
D明显不对