III. Choose the word (a, b, c, or d) that best fits each of the blank spaces. 1. How can we keep our teeth (21) ______? Firstly, we ought to visit our (22) ____ twice a year. Secondly, we should brush our teeth (23) ____ a toothbrush and fluoride toothpaste at least twice a day, once after breakfast and once before we go to bed. We can also use toothpicks (24) _____between our teeth after a meal. Thirdly, we (25) ______ eat food that is good (26) ______ our teeth and our body: milk, fish, brown bread, raw vegetables, fresh fruit, etc. 1. a. health b. healthy c. healthily d. unhealthy 2. a. dentist b. doctor c. teacher d. engineer 3. a. on b. of c. by d. with 4. A. clean b. to clean c. cleaning d. to cleaning 5. a. should b. ought to c. need d. a & b 6. a. for b. at c. on d. to 2. A: Wow, you don’t (1) _____ very good! Do you feel OK? B: No, I think I’m getting a cold. What should I do (2) _____ it? A: You (3) ____ stay at home and go to bed. B: You’re probably right. I’ve got a really, bad cough, too. A: Try (4) _____ some hot tea with honey. It really helps. B: Anything (5) ____? A: Yeah, I suggest you get a big box of (6) _____! 1. a. look b. seem c. feel d. all are correct 2. a. to b. for c. of d. of 3. a. must b. should c. ought to d. all are correct 4. a. drink b. and drink c. drinking d. to drinking 5. a. more b. different c. other d. else 6. a. bandage b. alcohol c. tissues d. eye chart