Do Exercise 3 on your exercise-books.这句话哪有错

Do Exercise 3 on your exercise-books.这句话哪有错 How often do you exercise? how often do you exercise? But you must do exercise. Do you hare exercise是什么意思 you should do more exercise对do more exercise提问 what do you do for exercise?意思 Where do you exercise?I exercise at schoolWhat do you do on the internet?I often listen to music on the internetWhy do you like surf the internet?Because it is very interestingWho is your favorite host?{是your吧] I exercise three ( times) a day.( ) ( ) ( )do you exercise? how often do you exercise等于什么? how long do you exercise every How often do you exercise?怎么回答 要how often do you exercise作文 How often do you take exercise? when do you friends exercise的翻译 you'd better _(do) more exercise How ofen do you exercise .的知识点 How do you exercise to keep healthy?