--- Do you know the reason _________ pilots turn off the plane's lights before taking off? ---The practice is for the passengers to adjust to the dark _________ an emergency.

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• 1It was from the third floor of the teaching building ______ Tom shouted to me, “Wait till I set off.”

  A.what

  B.that

  C.which

  D.where

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• 2. Our teacher urges us to form a good habit of learning, __________we think will benefit us in the long term.

  A.what

  B.that

  C.which

  D.who

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• 3. — His mother was ill and he had to look after her in hospital. — That's _________ he was absent from the meeting.

  A.because

  B.what

  C.why

  D.which

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• 4It was because he was seriously ill _________ he was late for school.

  A.that

  B.which

  C.so

  D.what

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• 5President Obama held talks with Chinese President Hu Jintao in Beijing, ________ economic recovery, climate change and stopping the spread of nuclear weapons.

  A.which was discussed

  B.in which they-discussed

  C.when they discussed

  D.which discussed

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• 6It was not until 1936 ______ basketball became a regular part of the Olympic Games.

  A.that　　　

  B.when　　　

  C.which　　　

  D.then

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• 7It was in the garden of his old house ______ he grew up ______ he dug up a pot of gold.

  A.that; that

  B.where; where

  C.that; where

  D.where; that

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• 8______ makes the people who find value in hardships different is that they are able to combine what happened with the story of their own life.

  A.It

  B.What

  C.That

  D.Which

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• 9It was at this shop _______ I bought my skirt. How about coming to my home to have a look tonight?

  A.that

  B.where

  C.which

  D.what

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• 10It was __________ you had done ________made it possible for you to improve  your English.                                 

  A.that/ that

  B.that / what

  C.what/ what

  D.what/ that

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