do exercise用加s吗
do exercise用加s吗
do exercise 加s么?
do exercise什么时候加s?
she ofen exercise.exercise加s吗?
morning exercise可数吗 那do morning exercise要加s吗
do exercise什么情况加S
exercise什么时候加s
I will do more exercise every day为什么exercise不加s?
to do some exercise 为什么exercise 后面不加S啊
do moring exercises 和 do some exercise 为什么一个加s 一个不加
exercise 什么时候要加“s”?
先谢过了!do some exercise用加上s吗