To start a journey
set off
break off
To have an exercise session
work in
work out
To visit somebody at their house
come down
come round
To take care of somebody
to look into
to look after
to meet with somebody to spend time together
get together
get on with
To stop being friendly with someone
to fall out with sb
to drop off with sb
to become friends again after arguing
to break up
to make up
When something explodes
blow up
blow out
To have a good relationship with somebody
to get on with
to get off of
To go on holiday to a different place
go away
go out
When an airplane begins to fly
take off
set down
To calculate a problem
work out
solve out
To do something until completion: eg. an exercise or a job
carry out
carry in
To end a romantic relationship
make up
split up