1. а)My sister is still sleeping.
b) My sister has slept since 5 o'clock.
c)My sister usually sleeps during the day.
2. a) My mother always cleans out the apartment.
b)My Mother have cleaned out the apartment since the morning.
c)My mother is cleaning out the apartment now.
3.Grandfather is watching TV.
b) Grandfather have watched TV since 6 o'clock.
c) Grandfather is still watching TV.
4. a) My uncle writes verses.
b) My uncle have written verses since childhood.
c) Look! My uncle is writing verses, now.