on
with
for
100

Say well done to somebody who has achieved something.

Congratulate

100

To only think about one thing or person.

Obsessed

100

To be in charge of

Responsible

200

Be addicted to something such as a soap opera.

Hooked

200

To be full of (people)

Crowded

200

To say that something is somebody's fault.

Blame

300

To need somebody or something to survive.

Rely

300

To be sick and tired of somebody or something.

Fed up

300

To say sorry.

Apologise

400

To think hard about something specific.

Concentrate

400

To know about or to have heard of somebody or something.

Be familiar

400

To write a letter asking for a job.

Apply

500

To enjoy doing something.

Keen

500

To have the same opinion as somebody.

Agree

500

To give money in exchange for something.

Pay