Question

When Li Ming got to American, he found his English was quite different ________ he had learn in China．

1. A.
   from which
2. B.
   of that
3. C.
   from what
4. D.
   from the one

Answer 1

C
from与different搭配。A项是考生易误当成定语从句关系代词的错误；由于English为不可数名词，不能用one来指代。C项中what在从句中作learned的宾语。