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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 509

---- A number of voiunteers _____ willing to teach in China’s rural areas.
----- Yes. The number _____ getting bigger and bigger.

A.is ; is B.are; is
C.is; are D.are; are
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Anumberofvoiunteerswillingtote