Fill in a preposition.

She paid for lunch ___________ advance, so we don’t need to pay now.
I went to the wrong house ___________ mistake!
Please make sure that you’re ___________ time for the class!
I was walking to the station and ___________ chance I saw the glove I’d lost on the ground.
I think the cat is ___________ danger on that high roof.
I picked up the laptop and ___________ my surprise it fell apart in my hands.
If the baby starts to cry, pick her up ___________ once.
I have a lot ___________ common with my cousin. We both like many of the same things.
It’s best to arrive ___________ foot, because there is nowhere to park.
Did you forget your purse ___________ purpose so you wouldn’t have to pay?