I have heard these sons and daughters say they never fully appreciated their mothers ________ it was too late to tell them．

试卷相关题目

• 1It was three months ________ the Smiths returned from abroad．

  A.since

  B.before

  C.after

  D.until

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• 2Lin Dan, the two-time defending world champion, raced to a 7-0 lead in the second game, ________ a stunned Lee Chong Wei started to even find his rhythm．

  A.before

  B.after

  C.since

  D.once

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• 3I was speaking to Tom on the phone about our class outing ________ suddenly we were cut off．

  A.as

  B.while

  C.before

  D.when

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• 4I was leaving ________ several girls came up to me．

  A.while

  B.when

  C.as

  D.since

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• 5The book was published ________ it was written．

  A.soon before

  B.long before

  C.before long

  D.soon after

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• 6It began to rain ________ he got on the bus．

  A.at the moment

  B.every time

  C.the moment

  D.on the moment

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• 7________ he arrived at the station, the train had already left．

  A.As

  B.While

  C.When

  D.After

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• 8I saw Mr．Green take care of his flowers ________ I went past his house．

  A.each time

  B.at each time

  C.for each time

  D.with each time

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• 9________, his father took him to a small island and he lived there until eighteen．

  A.when he was three

  B.As a boy of three

  C.At the age of three

  D.Being three years old

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• 10The head of the company promised to deal with matters of this sort ________ he returned to his office．

  A.until

  B.while

  C.by the time

  D.the moment

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