It is not a healthy habit staying up too late.这个句子为什么用staying up?用了什么语法啊?

Having a healthy lifestyle is not difficultIs it not difficult —— —— (填空）a healthy lifestyle. it is not healthy的同义句 Amerian fast food is a p---- because it is not healthy. 选择：Ben watches too much TV.It is not healthy ( ).A.to B.too C.either is,healthy,much,food,too,sweet,eat,to,not,it. Healthy living is not as it sounds.改为同义句 ______she is not so healthy _____she used to be A.why is it that:what B.how is it that :as为什不选A Coke is not a healthy drind.怎么改为同义句鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡鸡 Do not eat f—— food.It is not healthy. 1, am l feeling not well 2, balance of yin a need we and yang be healthy to3, lfestyle it easy is to a have healthy 4, give doctor you a can medicine 连词成句 Terry's diet is not very healthy.Tommy's diet is very healthy.(合并句子） A:B:C: It's easy to have a healthy lifestyle.同义句 It is __ __ to have a healthy lifestyle. is,healthy,much,food,too,sweet,eat,to,not,it连词成句 It is not a healthy habit staying up too late.这个句子为什么用staying up?用了什么语法啊? Having a healthy lifetyle is very important 改同义句It is important（）（）a healthy lifestyle Is it a healthy drink ( ) an unhealthy drink? It is a healthy drink; it is ( ) for our health.还有Have you got （ ）milk ? I want to drink ( ). A lot of ice cream,hamburgers and cola is not healthy 为什么是is A lot of ice cream,hamburgers and cola is not healthy 为什么是is