Robotsareusedto________manythi

发布时间:2020-07-28 08:51:35

Robots are used to ________ many things and now we are used to ________ a lot of modern machines.A.do…useB.doing…useC.do…usingD.doing…using

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C解析前者表示“被用来做……”,应用be used to do;而后者表示“习惯于……”,所以用be used to doing结构.
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