Our city has changed a lot,and now it is different from ____ a few years ago.

问题描述:

Our city has changed a lot,and now it is different from ____ a few years ago.
A.what it used to be B.that it used to be
C.which it was D.what it was
She is not the girl___ she used to be
A.whom B.who C.that D.what
为什么第一题选A第二题选C ?

第一题what前没宾语,what是代词作宾语
第二个that是关系代词,已经有she做宾语了