2. We can't do anything about it now. NOTHING
There's nothing to worry about it now.
3. How stupid of us! WAS
It was so stupid of us.
4. It's not a big deal. END
It's not the end of the world
5. I regret not bringing something to drink. WISH
I wish I brought something to drink.
6. There's no point worrying about it. MILK
It's no reason to cry over spilt milk