https://i.imgur.com/OqCVCCU.jpg
https://i.imgur.com/o6nlrsd.jpg
bài tập sau hình ảnh số 2 nha ^~^
36 . How often should we visit our dentist a year ?
37. What should we brush our teeth with ?
38. What else we can use to clean between our teeth after a meal
39. What kinds of food are good for our teeth ?
40. What kinds of food are bad for our teeth ?
