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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:2

—How long have you been in Qiqihar?

—________ my father came here to work five years ago.

A.

When

B.

While

C.

Since

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—HowlonghaveyoubeeninQiqihar?—