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  • 更新 2022-09-04
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 27

If you keep learning English for            half an hour each day,your English will be gradually improved.(  )

A.

at least

B.

at present

C.

at once

D.

at first

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IfyoukeeplearningEnglishforhal