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【答案】doing, swimming, sleeping ,reading,
eating, washing, running, putting,
having, cooking, sitting, singing,
cleaning ,watching ,growing
【解析】本题考查动词的现在分词形式。一.直接在动词后面加-ing 二.动词变现在分词以不发音的e 结尾的去e 加-ing 三.动词变现在分词:重读闭音节,双写最后一个辅音字母,再加-ing 四.以ie结尾的动词,变ie为y,再加ing。