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题型：填空题 题类：常考题 难易度：普通
仁爱科普版九年级上Unit 1 The Changing World Topic 2 The population in developing countries is growing faster.
①developing countries
②developed countries
③So do I.
④ So it is.
Please {#blank#}1{#/blank#} {#blank#}2{#/blank#} every student is in the classroom.
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