It wasn’t such a good job _____she had read about in the advertisement.选什么

问题描述:

It wasn’t such a good job _____she had read about in the advertisement.选什么
It wasn’t such a good job ___________she had read about in the advertisement.
  A) like
  B) which
  C) as
  D) what
为甚么选as而不是which呢

such as 固定搭配