介绍:
Here is a big ball
The ball is round
You can kick this ball
You can play with it
Here is a big ball
This ball is round,too
You can bounce this ball
You can play with it
Here is a big ball
The ball is not round
You can play with this ball
You can run with it,too
You can play a game with a ball at school
You can play with a ball at home,too
