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_________________________________________. 三、綜合練習。 Teenagers are very busy at school now and often fet to think about their diets and sports. The truth is that healthy eating and regular exercise are t 1 ways to keep fit. D 2 your teenage years, it is important to give your body enough e 3 it needs. Young girls need about 2,200 calories a day. Usually boys need a bit m 4 , many doctors suggest, 2,800 calories for teenage b 5 . 50% of your calories should e from rice, bread, vegetables and fruit. You also need to drink a lot of water, 6 to 8 glasses a day. D 6 enough water will improve your dr