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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1922

—I'm sorry I stepped outside for a smoke. I was very tired.
—There is no________for this while you are on duty.

A.reason
B.excuse
C.cause
D.explanation
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—ImsorryIsteppedoutsideforasmo