能帮下忙吗~

1 。 when and where to go for the on-salary holiday( ) yet.

A. are not decided B. have not been decided

C. is not being decided D.has not been decided

是选c没错，但我不知道为什么~下一道明明和第一题差不多可又选别的了~为什么呢

2. when and where to biuld the new factory ( )yet.

A. is not decided B. are not decided

C. has not decided D.have not decided

这道题是选A和第一题有何不同~拜托解答下~

跟你说，第一题选D，A,是复数，不符合题意。B也是复数。C被动语态的进行式，不符合题意。D正确。

第二题选A, B是复数。。。。 C是单数，但是没有被动，D更加离谱，既是复数，又没有被动语态