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  • 科目:英语
  • 题型:选择题
  • 难度:中等
  • 人气:55

Be quick,     we'll fail to catch the school bus.

Don't worry. It's only seven o'clock now. We still have enough time.(  )

A.andB.butC.orD.so

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Bequick,wellfailtocatchthescho