I don't know what I will do next.同义句改同义句,急急急急急········

I don't know what I will do next.同义句改同义句,急急急急急········
I don't know what I will do next.同义句
改同义句,急急急急急········

I don't know what I will do next.同义句改同义句,急急急急急········
I don't know what to do next.

I have no idea what to do next.

1. I am wondering what the following will be going on.
2.I have no idea what to do next.
3.What I will do next is totally beyond me.
4. What I will do next is out of my depth.