问几道初中英语题~~拜托了

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~

第一題應該是選D,不是C

第2題 4個答案都錯，但應該是 “has not been decided”

我觉得第一题应该选B，按照题意带薪假期何时出发和去哪里到现在还没决定下来。主语when and where to go ，when 和where中间用并列连词and 连接，主语应该是复数，时间状语yet 一般与完成时连用，此句的主语是动作的承受者应该用被动语态，因此答案B.have not been decided 应该是正确的

两个答案都是可以的。

is not decided 是表一个状态

has not been decided 是表动作尚未完成

负责任的说第一题答案不可能是c

你确定第一题是选C ？ 我怎么觉得是错误的啊 结尾有yet啊 应该用完成时啊