阅读理解。 Good health is very important for us. If we don't have good health, how can we work hard? And if we cannot work hard, how can we succeed and how can we be happy? Money can do many things and make one enjoy the world in many ways, but it has no meaning to one who is not in good health. A number of useful rules can do much to make good health, if we follow them. Firstly, we must take food at regular times and never eat too much. Secondly, keep our rooms airy (通风的). Fresh air is good for health, and also we must always keep our bodies clean. Cleanliness (干净) keeps sickness away. Thirdly, we must have enough sleep. Late to bed and late to rise will spoil and ruin (摧毁) our health. And we must have exercises. Exercises make our muscles (肌肉) strong and protect (预防) ourselves against illness. Finally, there is one important thing to do: work. Making ourselves busy at work helps much in keeping good health. Lazy people can never enjoy good health and can never succeed and be happy. 1. Having money but without good health can't _______. 2. Rule One tells us that we should _______ and never eat too much. 3. Rule Two shows us that we should stay in the fresh air and _______ 4. Rule Three says that _______ can make us strong and stay away from illness. 5. Lazy people can _______ enjoy good health and can never _______ and be happy.