Question

If you ________ be in time for the early bus, be sure to get up before five o’clock in the morning．

[　　]

A．

are to

B．

are about to

C．

are going to

D．

are due to

Answer 1

答案：A
解析：

本题考查几个表示将来的结构区别。be to do“意欲、必须做”；be about to“刚要”；be going to“计划打算”；be due to“预定做某事”。根据句子的意思“一定5点前起床，就是想必须赶上早班公共汽车”可得出答案。