一道英语从句的题,The topic,_____ we devoted a full discussion,is to be presented to our teacher at class.[ ]A.whichB.whereC.to which D.for which 说是定语从句,可是定语从句中介词+关系代词不是等于关系副词吗?为什么不能是B?

问题描述:

一道英语从句的题,
The topic,_____ we devoted a full discussion,is to be presented to our teacher at class.
[ ]
A.which
B.where
C.to which
D.for which
说是定语从句,可是定语从句中介词+关系代词不是等于关系副词吗?为什么不能是B?