Ответ:

  1. John always paints in the art club.
  2. Mary, eat now.
  3. Bob always watches television after school.
  4. John, play computer games now.
  5. I always do my homework.
  6. Mary and Bob are leaving home now.

В предложениях с always используется Present Simple; для действия, происходящего сейчас, — Present Continuous.

Ответ: 1) paints; 2) eat; 3) watches; 4) play; 5) do; 6) leaving.