补全对话A: Will you go to Canada for the summer holiday, Yang Ling?
B: {#blank#}1{#/blank#}, I {#blank#}2{#/blank#}. I'll go to the {#blank#}3{#/blank#}.
A: {#blank#}4{#/blank#} {#blank#}5{#/blank#} will you stay there?
B: I'll stay there for fifteen days.