Do you know which room we should put these things in?(改同义句)

问题描述:

Do you know which room we should put these things in?(改同义句)
Do you know _ _ _ put these things in?
根据意思写词语
It's still _ (不知道)why he left his rock band?

1,填which room to
在宾语从句中,what,where,which,how等词中,一般能在后面加to do/go来改写
2,unknown
"不知道的"
这里是被动语态,译为""不被知道的