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.