Допишите следующие предложения, употребляя герундий или инфинитив. В тех случаях, когда наряду с герундием можно употребить инфинитив, поставьте инфинитив в скобках после герундия:
11. She is very fond of ... .
12. He likes ... .
13. He started ... .
14. She enjoys ... .
15. Have you finished ... ?
16. I could not prevent him from ... .
17. I am proud of ... .
18. He went to bed after ... .
19. They are engaged in ... .
20. It is worth while ... .

11. ... reading aloud; walking, etc.
12. ... swimming {or. to swim); riding {or: to ride) a bicycle, etc.
13. ... smoking {or: to smoke) at the age of eighteen; working (or: to work) at this factory two years ago, etc.
14. ... bathing in the sea; going to the theatre, etc.
15. ... reading this book?; doing your lessons?, etc.
16. ... going there; doing it, etc.
17. ... being (or: to be*) his pupil; being praised (or: to be praised) by my teacher, etc.
18. ... reading the newspaper; finishing his work, etc.
19. ... selling timber; producing machine-tools, etc.
20. ... seeing (or: to see) this film; reading (or: to read) this novel, etc.