regard as	Dickens is regarded as one of England's greatest novelists.
economise on	We managed to economise on heating because of the winter.
a question of	I can do it for you, but I'm busy now. It's a question of time.
rely on	A friend should be a person you can rely on.
to and fro	The school isn't far. The children walk to and fro twice day.
do without	I can't do without a cup of coffee at ten o'clock.
bring back	Can I borrow your car? I'll bring it back in an hour.
settle down	Jane was unhappy at first, but she soon settled down in her new school.
child's play	He thought the exercise was child's play but he made ten mistakes.
plug in	You can plug in your radio over there by the bed.
out of stock	This shop sens ladders, but they're out of stock at present.
hang on	"I'm going now." "Hang on a second. I'll come with you."
how are things	"How are things at work these days, Fred?" "Not bad, thanks, Paul."
involved in	He was involved in several dishonest affairs.
can't bear	I can't bear loud radios.
catch up with	I was ill last week so I've got a lot of work to catch up with.
bump into	"Have you seen Ted lately?" "Yes. I bumped into him at the cinema last week."
come across	I came across your letter while I was tidying up my office.