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题型：单选题 题类：常考题 难易度：普通
方式状语从句练习
It shows the {#blank#}1{#/blank#} of{#blank#}2{#/blank#} {#blank#}3{#/blank#} , but I'd like to help {#blank#}4{#/blank#}the WWF suggests .
The couple treat the boy{#blank#}1{#/blank#}.
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