速求 请用I think / I know / I believe / I wonder / I ask / I wonder

问题描述:

速求 请用I think / I know / I believe / I wonder / I ask / I wonder
分别造出2句带that 2句带 if/whether 2句疑问句

I wonder if it is going to rain today?
I believe that failure is the mother of success.
I know that you love playing games.
一定要疑问句吗?