乌鲁木齐五十二中
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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1779

__________ the correct way of learning, and you must make much progress.

A.Insist on B.Insisting on
C.To insist on D.Insisted on
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__________ the correct way of