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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 314

If you feel tired and sick of fat food, that is _______ you have to go to the hospital for a medical examination.

A.why B.when C.whether D.what
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Ifyoufeeltiredandsickoffatfood