情景交际：根据上下文补全对话。

Peter: What's your 1______ subject, Lily?

Lily: Well, I like math 2______. It's 3______.

Peter: Interesting? Math is boring. Science 4______ my favorite. It's very interesting, 

and Mr Green is a good teacher. So, who's your math teacher?

Lily: Mrs Gao. She's great, though she is a bit strict with us.

Peter: 5______. do you have math class?

Lily: I have math 6______ Monday, Wednesday 7______ Friday. What 8______ you?

Peter: I have math on Monday and Thursday.

Lily: 9______ your favorite day?

Peter: Tuesday. 10______ I have science that day.

Lily: Oh, I see.