补全对话。Anna: {#blank#}1{#/blank#}.
John: {#blank#}2{#/blank#}. Can I have a look?
Anna: {#blank#}3{#/blank#}. Here you are.
John: {#blank#}4{#/blank#}.
Anna: {#blank#}5{#/blank#}.
John: You are welcome.
A. Sure!
B. I have a nice cat.
C. Oh, really?
D. Thank you.
E. Oh! It's nice. I like it.
