He spent two hours finishing his homework. (对划线部分提问)  

 {#blank#}1{#/blank#} {#blank#}2{#/blank#} did he spend finishing his homework?

= {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} college students often have three meals in the dining hall.

 {#blank#}1{#/blank#} {#blank#}2{#/blank#} at 5:00, please!

 Is that a {#blank#}1{#/blank#} {#blank#}2{#/blank#} his {#blank#}3{#/blank#}？

{#blank#}1{#/blank#} {#blank#}2{#/blank#} your father play ball games with you?