7、A: I've talked with him for a long time. He just wouldn't listen. He's as stubborn as a mule.
4、What do you mean I'm as stubborn as a mule? When ot comes to being stubborn, you take the cake!
2、She can be as stubborn as a mule.
1、He's as stubborn as a mule.
3、You won't get Glenda to change her mind; she's as stubborn as a mule.
6、It's useless to persuade him, he is as stubborn as a mule.
5、Maybe you should give up. You know, he is as stubborn as a mule.