to do some exercise 为什么exercise 后面不加S啊

We should do some exercise to keep fit疑问句 the boy wants to do some exercise in the morning.对划线部分提问.（do some exercise） to do some exercise 为什么exercise 后面不加S啊 have,do,good,you,some,to,exercise,habits,do ) 连词成句,哪位大师教教我? ____ will do you good to do some exercise every morning.A.ItB.ThereC.ThoseD.You lucy ___ to do some exercise because she wants to keep healthyA makesB helpsC triesD takes 改错Jim wants to do some exercise in the weekends A是do B some c in do more exercises,do more exercise,do some exercise,do some exercises的区别 Sonja has to do some exercise to stay healthy.改否定句 为什么还用some而不用any Let's do ______ (some) exercise ,OK Do some exercise with me的意思 some,do,I'm,exercise,to,going(连词成句） I often went to park with my brother do some exercise. They'd like to do some exercise every morning(改为同义句和疑问句) school exercise go do some to l'll before l 连词成句 六年级英语(改成同义句):Tim wants to do some exercise at weekends. Those students are going to do some exercise.(改为否定句) It is good __us to do some physical exercise every dayA.of B.for