1. Stop (talking).
2. When will you finish (translating) the text?
3. He gave up (playing) football last year and took up (swim).
4. Continue (work).
5. Please, don’t pay attention to me and keep on (writing).
6. I started (playing) the piano when I was four.
7. When will you began (thinking) about your studies?
8. Go on (reading).