Where would you put a comma in this sentence?
The puppy retrieved the toy and then he brought it back to me.

Ava said"I want to take a nap."

Is this comma in the correct place?
My sister, Mary, is a very nice girl.

She kept repeating I want a car!
Where does the colon go?

We had way to many misses; we lost the game.
Is this semicolon in the correct spot?

Where does the semicolon go?
Some people dream of being something big others stay awake and are.