Задание 2
1) Stop talking
2) When will you finish translating the text?
3) He gave up playing football last year and took up swimming.
4) Continue working.
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.
Задание 3.
1) Stop crying.
2) Keep on writing.
3) I think you should go in for sports.
4)Have you finished reading the book?
5) He gave up playing computer games.
6) A good idea to start playing a musical instrument.