优优班--学霸训练营 > 题目详情

  • The volunteers have already returned from the games. (改为否定句)

       The volunteers           returned from the games         .

    【考点】副词,助动词,现在完成时
    【分析】请登陆后查看
    【解答】请登陆后查看
    难度：易
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