fall through
fail
doesn't happen
Our planned boat trip fell through because of the storm.
figure out
understand
find the answer
I'm trying to figure out how to assemble the bookshelves.
We'll have to figure out a way to deliver the goods faster.
fill out
complete (a form/an application)
Please fill out the enclosed form and return it as soon as possible.
find out
discover or obtain information
I'm going to call the cinema to find out what time the film starts.
focus on
concentrate on something
The advertising campaign will focus on the quality of the product.