簡(jiǎn)單少兒英語(yǔ)歌曲：what are they doing

★以下是為大家整理的簡(jiǎn)單少兒英語(yǔ)歌曲：what are they doing文章，供大家參考！
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    what are they doing
    they are swimming
    are they happy?
    yes ,they are