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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 368

In American, a friend inviting you to a restaurant doesn't mean that he or she will pay for the meal ______ you are told ahead.

A.until B.unless C.although D.if
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InAmerican,afriendinvitingyout