You'd better get up_____possible______you can catch the early bus?

选A，as +形容词或副词原级+as possible，固定搭配，意思是尽可能。。。样。so that，以至于的意思。in order不合句意。

A
as early as possible 尽可能的早

so that 以至于，以便于

你最好还是尽可能的早起，那样你就能赶上早班车了

A
as early as possible 尽可能的早
so that 以至于，以便于
你最好还是尽可能的早起，那样你就能赶上早班车了

若用in order，得用in order that

根据句子意思，应该是尽可能早起，选用EARLY,SO THAT 后可以跟句子，IN ORDER 后常接TO 所以选A

A 呀
如果相拥in order，需要加to,in order to catch the early bus