В чём разница предложений?Work in pairs. Explain the difference between sentences a and b in each pair. 1 a)i'm doing my homework after school. d) I do my homework after school2 a) Joe is learning to drive. b) Many teenagers learn to drive when they are seventeen.3 a) Mark plays the guitar. b) Mark is playing the guitar.4 a) We aren't going on holiday in August. b) We don't go on holiday in August.​