GPS has finding out our position and studying the shape of the earth.

题型：单选题题类：常考题难易度：普通

仁爱科普版九年级上Unit 4 Amazing Science Topic 1 When was it invented?同步练习1

A、used to B、be used to C、been used to D、been used for

举一反三

— No, I bought nothing.

It isn't{#blank#}1{#/blank#} to shop{#blank#}2{#/blank#}.

{#blank#}1{#/blank#}the dishes and our{#blank#}2{#/blank#}. I{#blank#}3{#/blank#} I was back home.

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