12. She has learned _______ him that taking regular exercise and eating a balanced diet help us keep fit. A. from B. about C. for D. in 13. In the past, people _________ a lot of clean vegetables and other healthy food. A. eat B. have eaten C. ate D. are eating 14. Have you started to _________ again? Do you feel better now? A. give up B. work out C. give off D. suffer from 15. After _________ she could walk and talk to other people. A. sleep B. fitness C. treatment D. explanation 16. Some people cant sleep well because they _________ stress. A. increase B. suffer from C. receive D. improve 17. They _________ my blood pressure. A. just checked B. just check C. are just checking D. have just checked 18. My brother often _________ late to finish his homework, which is not good for his health. A. stays up B. takes up C. brings up D. gives up 19. Exercise is good but avoid _________ right before you go to bed. A. exercise B. to exercise C. exercising D. exercises 20. Doctors always advised her to cut _________ salt and sugar in her diet. A. off B. on C. down on D. about 21. How about _________ the reading club with you? A. join B. joining C. to join D. joined 22. _________ are often used to treat infections caused by bacteria. A. Nutrients B. Minerals C. Diets D. Antibiotics