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题型:翻译 题类:模拟题 难易度:普通
It often {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#}.
The {#blank#}1{#/blank#} of the stones must be {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} {#blank#}5{#/blank#}.
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