根据对话内容,选择正确答案。
Mum: It's 7:00. It's time to get up, Sarah. Breakfast is ready.
Sarah: What day is it today, Mum.
Mum: It's Sunday. What do you do on Sundays?
Sarah: I often play ping-pong with my friend, Chen Jie.
Mum: OK. And?
Sarah: My friend Lily asks me to go shopping.
Mum: That's good. And?
Sarah: I do my homework. What do you do on Sundays?
Mum: I wash clothes.
Sarah: I'll help you, Mum.
Mum: You are athoughtfulgirl!
Sarah: Thank you, Mum.