I hope we will {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} next time.

—我和我的姐姐去放风筝。

—{#blank#}1{#/blank#}are you {#blank#}2{#/blank#}to {#blank#}3{#/blank#}after school?

—I'm going to {#blank#}4{#/blank#}kites {#blank#}5{#/blank#}my sister.

{#blank#}1{#/blank#} is a {#blank#}2{#/blank#} book.

{#blank#}1{#/blank#} I {#blank#}2{#/blank#}some milk?

{#blank#}1{#/blank#}意为"什么时候"，用于询问时间；
{#blank#}2{#/blank#}意为"什么"，用于询问事情或事物；
{#blank#}3{#/blank#}意为"为什么"，用于询问原因。 
如: 
— Why are you late today? 
— Because I get up late today.