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  • 更新 2022-09-03
  • 科目 英语
  • 题型 未知题型
  • 难度 中等
  • 浏览 1327

ever since while as soon as  since before until however
I'll leave __________ I'm ready.
One can't see air;__________,it does exist.
The telephone rang __________ I was in the garden.
__________ we came to the university, we have learnt quite a lot,
I've never got any letter from him __________ he left.
Only two days remained __________ the examination.
He worked in Hong Kong __________ his father found a job for him in Canada.

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