根据短文内容和首字母提示，把所缺单词填写在短文后面相应的横线上，使句意完整。
It's very important for us to keep (1)h______ in our everyday life. Here is some (2)a______ for you. First,
you should have healthy diet. Different food helps us in different (3)w______. You should eat more fruit and
vegetables instead (4)o______ hamburgers, Beijing roast duck and so on. If you choose the right food, you can
have healthy eating habits. Second, doing exercise is good (5)f______ your health. For example, climbing
mountains, riding bikes or swimming. Third, you should (6)s______ at least eight hours a day and you shouldn't
work or study too hard. Finally, remember that (7)s______ is bad for your health, so don't smoke, you will
become (8)m______ healthier.
多31人，问这个班共有多少人？（）
，依题意
，解得x=33，女生有42人，共有75人。