改为简单句5个

1.I want to know when we are going to leave.
- I want to know when to leave.
2.Rose doesn't know how she can repair the watch.
-- Rose doesn't know how to repair the watch.
3.The teacher told the students what they should do and how they should do it.
-- The teacher told the students what to do and how to do it.
4.I didn't know whether we could go there or not.
-- I didn't know whether to go there or not.
5.Could you tell me when we will go there?
-- Could you tell me when to go there?

when are we going to leave
how can she repair the watch
what should they do and how should they do it
could we go there
when will we go there

@.@
为什么我感觉我不会？！