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题型：单选题 题类： 难易度：普通
上海市罗南中学2023-2024学年六年级上学期第二次阶段练习英语试题
—Yes, I'd love to.
— Yes. We must try to prevent the flood ________ the fish in the river.
{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} there because summer is cool and winter is warm.
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