1) am writing, 2)was writing, 3)is sleeping, 4)was sleeping, 5)are not doing, are playing 6)were not doing, were playing, 7)are you eating 8)was eating 9)is your father doing 10)was your father doing , 11)is she crying, 12)was she crying, 13)was reading, 14)isn't reading , 15) is going 16)are you doing, a'm drinking, 17)were you drinking tea, wasn't drinking , was eating 18)was reading, is reading, 19)is playing, 20)was shining, were singing