阅读对话，判断句子正误。

A: I was busy last Sunday. What about you, Mary?

B: I was on the farm with my uncle.

A：What did you do?

B: I did exercise in the morning. no

A: Were you free in the afternoon?

B: No, I wasn't. I cleaned the farm.

A：Did you watch TV?

B: No. I must finish my homework.

A: I'm sure you were tired.

B: You're right. But I think it was interesting.