be on - 1.to be switched on(gas,electricity) 2.to be shown(films,plays)  , work out - 1.to think about smth and try to understand 2.to solve a problem 3.to do physical exercises(e.g.in the gym), catch up with - to achieve the same level as smb, keep up with - 1.to do as much or as well as other people 2.to continue at the same speed, stand for - 1.to support 2.to represent a word or idea as a short form, turn up - 1.to arrive suddenly;to happen unexpectedly 2.to be found by chance 3.to increase the sound,heat,light, carry out - 1.to do smth you've said you'll do 2.to make an experiment, investigation, fall behind with - 1.to become less successful than other people 2.to be late in doing smth, hold on - 1.to wait(e.g.on the telephone)for a short time 2.to continue doing smth very difficult, do without - to live or do smth without smth/smb, give in - 1.to give a peace of work to smb in authority 2.to agree to a person's demands, clear up - 1.to make a place look tidier 2.to explain smth,make it easier to understand,

Phrasal verbs U 4

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