Indefinite Pronouns

I am sure I put down my keys ____

Let's sit down ____ and talk.

I heard a knock at the door but there was ___ there.

We didn't see ___.

The restaurant was really crowded. ____ had a good time.

I don't think ___ knows the answer to that question.

I've got ___to tell you.

She can't go ___ without people recognizing her.

I was really bored during the holiday. I did ____ and went ____.

Let's go ____ different tonight.

The trouble is that there is ____ for young people in this town.

Calm down. There is____to worry about.