阅读理解填词。

　　Teenagers are always stressed out now．They are often too b　　1　　 to think about their diets and exercise．The truth is, healthy eating, a　　2　　 with regular exercise．Is the only way to k　　3　　 fit．

　　During your teenage years, it is important to give your body the e　　4　　 it needs．Teenager girls need about 2,200 calories(卡路里)a day and boys need a bit more．Doctors suggest 2,800 calories for teenage boys．50% of your calories should come from rice, bread, v　　5　　 and fruit．You also need to drink a lot of water, six to eight g　　6　　 a day．Enough water will improve your skin and give you healthy hair．

　　Exercise can help to make you look good, feel good and be healthy．Scientists suggest that teenagers should spend at least 30 minutes e　　7　　 every day．

　　When you exercise, your body p　　8　　 something．It makes you feel r　　9　　 and energetic．It can even help you sleep better at night and let you pay more a　　10　　 when you study．

　　Let's eat healthily and take regular exercise．

根据首字母提示，补全对话。

Ben：Have you h 　　1　　 about an event that c 　　2　　 money for charity called Trailwalker?

Jack：Yes．Is it the long walk in the country o 　　3　　 by Oxfam Hong Kong?

Ben：Yes, it is．I'm thinking of joining it．It's a good c 　　4　　 to learn about working together．

Jack：Who can take p 　　5　　 in trailwalker?

Ben：People o 　　6　　 18 years old．They have to finish the walk w 　　7　　 48 hours．

Jack：It's a d 　　8　　 walk but I'm really i 　　9　　 in it．Do you think I can j 　　10　　 the walk?

Ben：Yes, sure．We can be in the same team．

Jack：Oh, that would be g 　　11　　．Let's find two more m 　　12　　．