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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:490

-What is the boy standing out of the house for?       .
-Because he left his key at home. He can't get in the house         his parent comes back.

A.because B.until C.after D.when
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Whatistheboystandingoutoftheho