To get the job started,______ I need is your permission.A.on

To get the job started,all that I need is your permission
===To get the job started,WHAT I need is your permission.
===To get the job started,what I need is ONLY your permission
=====To get the job started,what I need is your permission ONLY.
====To get the job started,ALL THAT I need is ONLY your permission .
(请注意only的位置)

all that=what, what 是疑问词，前面不能用任何词修饰它。句子意思是为了使工作开始，我需要你的许可。

不能 WHAT=AII THAT 引导的是个主语从句

本句需要的是what引导的主语从句,C是all that等于what,所以选C.而Aonly what则不在是主语从句,不符合本句的要求,故而不能选A.个人意见,仅供参考!