________ is important ________ the water in the river clean.

题型：单选题题类：常考题难易度：普通

牛津深圳版英语七年级下册Unit 5 Water 单元测试.

A、It; keep B、It; to keep C、That; keep D、That; to keep

举一反三

— Good idea.

Let's play soccer {#blank#}1{#/blank#} {#blank#}2{#/blank#}！

I think a good friend{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}.

We should {#blank#}1{#/blank#} the bedroom {#blank#}2{#/blank#} every day.

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