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 disscussedC.has not disscussed D.has not been disscussed为什么选D而不是选B

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
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

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
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