It's Friday afternoon. The{#blank#}1{#/blank#}of Class One are cleaning their {#blank#}2{#/blank#}. The {#blank#}3{#/blank#}is with them. Li Ming is cleaning the {#blank#}4{#/blank#}. Chen Qiang is cleaning the {#blank#}5{#/blank#}. The {#blank#}6{#/blank#}are mopping the floor. {#blank#}7{#/blank#}is Wang Hai doing? He is cleaning the {#blank#}8{#/blank#}.

—Mr. Liu. He's very o{#blank#}1{#/blank#}.

—Is Tony tall?

— Yes, he is.

① {#blank#}1{#/blank#}    ② {#blank#}2{#/blank#}③ {#blank#}3{#/blank#}