Show:
运动
课堂
100
球
What is ball?
100
学校
What is school?
200
网球
What is tennis?
200
老师
What is teacher?
300
篮球
What is basketball?
300
笔记本
What is notebook?
400
足球
What is soccer?
400
同学
What is classmate?
500
跑步
What is running?