填空题 eight; health; healthy; memory; weight; stress; bright; stronger; taller; early; fresh 1. Sleeping is good for our ___________. It helps us to stay _________to improve our _________. 2. Sleeping can even help us to reduce ________ and lose _________. 3. A good night's sleep makes us feel ________ and ________. 4. Sleeping helps teenagers grow _______ and ________. 5. Teenagers should get at least ________ hours to sleep every day. 6. We should get up _______ and go to bed ________