II. Read the passage and choose the right answer. It is very important to have (1) ………. teeth. Good teeth help us to chew our food. They also help us to look nice. How can we keep our teeth healthy? First, we have to go to a dentist (2) ………… a year. Second, we should (3) …………our teeth at least twice a day – once (4) ………..breakfast and once before we go to bed. (5) ………….. we should eat food that is good (6) ……………our teeth and our body : milk, fish, raw vegetables and fresh food, Chocolates, sweets and biscuits are bad especially (7) ………..we eat them between meals. And last, we (8) …………use an old toothbrush. 1. A. health B. healthy C. unhealthy D. healthfully 2. A. two B. second C. twice D. third 3. A. brush B. take C. wash D. bath 4. A. after B. before C. during D. between 5. A. First B. Second C. Third D. Fourth 6. A. to B. at C. with D. for 7. A. what B. when C. where D. why GIÚP EM VS Ạ