10Giúp em vs em cần gấp

16. I used to give up smoking 10 years ago.

17. John often went on bare foot when he was a little boy.

18. He used to play tennis well, but now he doesn't.

19. It took me about 20 minutes for walking to school.

20. While I was having dinner, the phone rang.

21. I used to live on a farm, but I don't anymore.

22. Mark isn't old enough to ride his bike to school.

23. Nga is interested in listening to traditional stories.

24. Sao Mai theater is not far from Hoa's house.