We all know that it is ____to keep healthy. But not all people know____to keep healthy. After five days’ hard work, we need to have a good rest at weekends. But it seems that some don’t know how to spend weekends in the right way. They enjoy ____cards at night and don’t go to bed until midnight or even later. Some gamble (赌博) all night. They forget that to get ____sleep is necessary for health. Some never get up early in the ___and take some exercise. It is true that doing exercise is very important for us to keep_____Some smoke a lot. They forget that __  smokers are more likely (可能的)to have lung cancer (肺癌) than those who don’t smoke. Some drink too much wine. ____too much is harmful (有害的) to the body. Some eat too much fat, they may always ____tired. Vegetables are good to the body. But some don’t like eating vegetables. ____is also very good to body. As a saying goes: “An apple every day keeps the doctor away.” So don’t forget to eat some fruit.