I have two grammars, ______are of great use. A.all of whichB.either of whichC.both of thatD.both of

题目简介

I have two grammars, ______are of great use. A.all of whichB.either of whichC.both of thatD.both of

题目详情

I have two grammars, ______are of great use.
A.all of whichB.either of whichC.both of thatD.both of which
题型:单选题难度:偏易来源:不详

答案

D
主句中的two表明不能选A.从句中的are表明不能选B. both of which用来引导非限制性定语从句.

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