Keep at: continue to do.
e.g. You must keep at it until it is done.
Keep down: prevent from advancing.
e.g. His lack of an advanced degree will keep him down in his career.
Keep on: continue.
e.g. Keep on, and don't give up!
e.g. Keep on with your good work.
Keep up: maintain the pace.
e.g. Keep up and don't fall behind.
e.g. You have to work extra hard to keep up with the rest of the class.
Clear of: show someone is innocent.
e.g. After the investigation, the police cleared me of all charges.
Clear off: depart.
e.g. As soon as the police arrived, the crowd cleared off.
Clear out: get out of some place.
e.g. The fire alarm is on; everybody has to clear out!
Clear up: clarify something; improve.
e.g. Can you clear up this statement for me?
e.g. His cold cleared up after a week.
e.g. The sky finally cleared up, and we could see the sun.
Clear with: get the approval of.
e.g. We will have to clear this with the Mayor’s office.
Dress down: scold severely.
e.g. The manager dressed him down in front of all the employees.
Dress up: put clothes on; adorn.
e.g. Wow! Look at you! You really get dressed up for the party in this fancy dress!
Copyright© by Stephen Lau