感冒&发烧:you need drink lots of water.
you need have a rest .
you need drink some hot tea with honey.
肚子痛: you needn't eat anything.
you need lie down and rest.
头痛: you need go to bed.
最后来一句总的:you need take medicine.
追问你的才七个,而且you need take medicine.应该是You need take some medicine.每个句子首位字母都没有大写