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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 940

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When ___ help, one says “Thank you” while when _________ help, one asks “Can I help you?”

A.offered; offered B.offering; offered
C.offering; offering D.offered; offering
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.Whenhelp,onesaysThankyouwhile