to do some exercise 为什么exercise 后面不加S啊
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
I will do more exercise every day为什么exercise不加s?
do exercise 加s么?
do exercise什么时候加s?
Let's do ______ (some) exercise ,OK
exercise何时加s何时不加?
do some exercise是什么意思
为什么 favorite exercise中exercise不用加s
do some exercise,为什么不想do some cleanning那样加ING
do exercise什么情况加S
do exercise用加s吗