Ответ:

  1. She is playing the piano now.
  2. He goes to school every day.
  3. They are watching a movie right now.
  4. I am eating lunch at this moment.
  5. We visit the museum every summer.
  6. She reads a book every evening.
  7. He is cleaning his room right now.
  8. They play soccer every weekend.

В Present Continuous используется форма am/is/are + глагол с окончанием -ing; в Present Simple для he/she/it к глаголу обычно добавляется -s/-es.