题目内容

Online shopping, when properly , can save a lot of time ,money and energy..

A. done B. is done

C. having done D. to do

A

【解析】

试题分析：考查非谓语动词辨析。A. done，过去分词，表被动； B. is done，被动语态；C. having done，现在分词的完成式，表示主动；D. to do不定式表示目的，主动关系。句意：在线购物，当我们恰当地运用的话，可以节省许多的时间，金钱和能力。由句意可知Online shopping与Do之间是被动的关系，故可排除选项C、D，再由于插入语中无主语，所以要用非谓语，故选A。

考点：考查非谓语动词辨析。

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