warm up
I'm just trying to warm up! I had no heat last night because the boiler in my building broke. They finally fixed it this morning but I'm still freezing.
set up
Well it's hard to get a decent place. The landlord of the last apartment I found didn't come to the showing we set up, and rented to someone else!
pick up
Yeah, and owners have the advantage -- too many people looking with not enough flats on the market. I sure hope rental availability will pick up soon.
Phrase
to tell a person that they are the one to make a decision
up to you
Hey, I have a brilliant idea, why don't you move in with me? My roommate actually left last week. It's up to you... do you think we could live together?