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  • 科目:英语
  • 题型:选择题
  • 难度:中等
  • 人气:81

______did the rainstorm come, Mr. Liu?

While we_____a chemistry lesson yesterday afternoon.(  )

A.

When; have had

B.

When; were having

C.

While; are having

D.

While; have

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didtherainstormcome,Mr.Liu?Whi