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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1843

A survey of the opinions of experts ________ that three hours of outdoor exercise a week ________ good for one’s health.

A.show; are B.shows; is C.show; is D.shows; are
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Asurveyoftheopinionsofexpertst