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题型:单选题 题类:模拟题 难易度:普通
It's {#blank#}1{#/blank#} to tell children to {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} the fire.
Many people hurt {#blank#}1{#/blank#} by {#blank#}2{#/blank#} {#blank#}3{#/blank#} chairs.
Please{#blank#}1{#/blank#} your teacher{#blank#}2{#/blank#} it.
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