完成对话。A: Good morning, David.
B: Good morning, Cindy {#blank#}1{#/blank#}?
A: My first class is math. It's at 8:00.
B: {#blank#}2{#/blank#}?
A: No, I don't like it. It's boring. {#blank#}3{#/blank#}?
B: I like it and I think it's interesting.
A: {#blank#}4{#/blank#}?
B: No, my favorite subject is history.
A: History is interesting. {#blank#}5{#/blank#} ?
B: Mr. Wang. He is a nice teacher and we like him so much.