Where did my piece of cake go?

He responded with 'OK' to my proposal.

I think that proposal is OK.

OK, I'll do it if that's the case.

This room is very clean.

This inverter efficiently converts power.

We have enough resources for this project.

She was wearing a very pretty dress.

She is really pretty, isn't she?

In Greek mythology, Aether was the god of the sky.