Ответ: 1.Bess doesn’t help her mother2.my friend doesn’t play the piano3.we don’t listen to music4.you don’t make a lot of mistakes5.the farmer doesn’t work in the field6.the small boy doesn’t ride a bike7.he doesn’t look at the pictures in the book8.the workman doesn’t paint the house9.richards and henry don’t swim in the river in summer10.john doesn’t go to school by tram11. she doesn’t get up at eight o’clock.12.he hasn’t have tea for breckfast13.he usually hasn’t have dinner at two o’clock14.Mike is not my best friend15.peter doesn’t live in london