()They held a party in the hall __________had been beautifully decorated.A.whichB.whereC.in whichD.in that

()They held a party in the hall __________had been beautifully decorated.A.whichB.whereC.in whichD.in that
()They held a party in the hall __________had been beautifully decorated.
A.which
B.where
C.in which
D.in that

()They held a party in the hall __________had been beautifully decorated.A.whichB.whereC.in whichD.in that
选A 后面从句是修饰前面hall的,不缺介词,where=介词+which,故BC不选.因为需要一个引导词引导后面的从句,故不选D,选A.

A，在从句中是作为主语的，只能选A。

A， 定语从句，修饰先行词the hall