I need to request some time off from work.

He had to chop off a tree branch.

I use a spreadsheet to keep track of my expenses.

He gave an off the cuff speech at the conference.

He took advantage of his position under color of authority.

He always likes to show off his new car.

This tool is of use for fixing the problem.

Don't make a fool out of me.

I want a piece of the action.