Составьте вопросы. Дайте краткие ответы.
1) - ............................... salad?
- Yes, .......................... ( He is eating salad)
2) - ............................... salad?
- Yes, .......................... (He eats salad)
3) - ............................... their homework at the moment?
- Yes, .......................... (They are doing their homework at the moment)
4) - ............................... their homework after school?
- Yes, .......................... (They do their homework after school)
5) - ............................... on the computer?
- Yes, .......................... (She is working on the computer)

Is he eating salad? Yes, he is.Does he eat salad? Yes, he does.Are they doing their...? Yes, they are.Do they do ...? Yes, they  do.Is she working ...? Yes, she is.Надеюсь, помог)