自主预习
一、
二、1、promised
2、work
3、stressed
4、discovered
5、methods
随堂反馈
一、
二、
课后巩固
1、have made a promise
2、The medicine works only
3、Let's take the stone away, or there may be an accident.
4、This method is widely used in China.
5、She promised her younger brother that she would write to him.