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13．在展覽會上，公司銷售經理展示了孩子們翹首以盼的新型電子玩具．（demonstrate）At the exhibition，the company's sales manager demonstrated the new type of electronic toys which children were looking forward to．．

分析 At the exhibition，the company's sales manager demonstrated the new type of electronic toys which children were looking forward to．

解答答案At the exhibition，the company's sales manager demonstrated the new type of electronic toys which children were looking forward to．
根據句子的語境可知，表示發生在過去的展覽會上的事情，動作發生在過去，所以句子應該用一般過去時，動詞短語"展示某物demonstrate sth"；"翹首以盼look forward to sth/look for sth"，根據句意"孩子們翹首以盼的新型玩具"可知，這里可以用定語從句來表達，先行詞為the new type of electronic toys，定語從句為which children were looking forward to，因此答案為At the exhibition，the company's sales manager demonstrated the new type of electronic toys which children were looking forward to．

點評此題考查的是定語從句，用孩子們翹首以盼來修飾新型電子玩具．因為electronic toys是指代物，所以用關系代詞that或which，"翹首以盼"就是動詞"lookforward to或 long for"，介詞不能省略．在定語從句中缺少賓語成分，所以本來的關系代詞也可以省略．

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