use up

Separable

The object can go between the verb and the particle: turn the light off, or turn off the light. When the object is a pronoun it must go in the middle: turn it off, never turn off it.

The particle: up

This verb belongs to the group ‘doing it completely, to the end’.

Others in the group: eat up, clean up.

Practise it

Add it to your daily practice or see every verb with up.

Further reading: use up on Wiktionary (CC BY-SA).