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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:781

—Hurry up! The bus is coming.
—Wait a minute. Don’t cross the street _______ the traffic lights are green.

A.until B.after C.while D.since
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—Hurryup!Thebusiscoming.—Waita