Professor James will give us a lecture on the Western culture,but when and where( ) yet.
A.has not been decided B.have not decided
C.is not being decided D.are not decided
什么是投射定理?
人气：157 ℃ 时间：2020-10-01 23:52:45
解答
when and where has not been decided.选A.表示时间地点还没有被定好.因为是被动语态,所以用been decided.而when and where这表示时间地点一个整体,用单数形式.用has.故选A.
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