优优班--学霸训练营 > 题目详情
  • -Is it polite to speak or laugh loudly         ?
    -No, I don't think so.
    A．on timeB．at leastC．by chanceD．in public
    【考点】助动词,介词短语,固定搭配,疑问词组
    【分析】请登陆后查看
    【解答】请登陆后查看
    难度：中等
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