1(do the homework)He is doing the homework at the moment.2.(do his homework)He does his homework in the evening.3.(work)They are working now.4.(work)They work every Saturday.5.(cry)She is crying. What's wrong?6.(cry)She always cries a lot.7.(the piano)I play the piano every day.8.(play the piano)I am playing the piano now.9.(go to the park)We go to the park after classes.