(英语)改同意句

i'm not fast enough to catch up with them
I am too fast to catch up with them
I am not so fast that I can catch up with them
the girl is so shy that she can't speak in public
the girl too shy to can speak in public
the gitl is shy enoungh to can't speak in public
the room is too small for us to live in
the room is so small for us that we can't live in
the room is not big for us enoungh to live in

I walk too slow that i cann't catch them.
The room is not enough for up to live in.