• Give the correct form of the word in brackets 

1. They are used to ( prepare ) .......................... new lessons .
2. By ( work ) ..................... day and night , he succeeded in ( finish ) ................... the job in time .
3. His doctor advised him ( give ) ................... up ( smoke ) .
4. Please stop ( talk ) .................. . We will stop ( eat ) ................. lunch in ten minutes .
5. Stop ( argue ) .................... and start ( work ) ......................... .
6. Ask him ( come ) ................ in . Don't keep him ( stand ) ..................... at the door .
7. I like ( think ) ........................ care fully about things before ( make ) ............... decision . 
8. Did you succeed in ( solve ) ................... the problem ?
9. Don't forget ( lock ) ....................... the door before ( go ) ..................... to bed . 
10. Don't try ( persuade ) ................... me . Nothing can make me ( change ) ........................ my mind .