Where to get the materials and how to get them__at the meeting.A.have not disscussed B.have not been disscussedC.has not disscussed D.has not been disscussed为什么选D而不是选B

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Where to get the materials and how to get them__at the meeting.
A.have not disscussed B.have not been disscussed
C.has not disscussed D.has not been disscussed
为什么选D而不是选B

B的have表现形式为复数
D是对的因为有连词and,have,has根据它后面那个决定当作单数来看就好了.

这道题绝对选B
如果主语是where and how to get the materials 就选D

首先你要看them是复数,所以CD被排除
然后在A,B里选被动就是b了