key : Put the verbs in to the present continuous. (đặt động từ trong ngoặc ở thì hiện tại tiếp diễn)
1. am playing 2. are doing 3. aren’t/ are not waiting
4. Are ... working 5. is riding 6. are singing
7. is not teaching 8. are listening 9. are traveling/ travelling
10. is.....driving 11. is... doing