If the machine makes a mistake -- _______ rarely happens -- it gives a warning in the form of a red light.

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• 1He made a promise _____ he would treat me to dinner if I helped him with his housework,______ made me very excited．

  A.which; what

  B.that; what

  C.what; which

  D.that; which

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• 2An unusual Halloween party, an annual event in Boulder, Colorado, _______ is known as the Naked Pumpkin Run, caused trouble.      

  A.what

  B.that

  C.it

  D.which

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• 3I can think of many cases ______students obviously know a lot of English words and expressions but couldn't write a good essay .

  A.why

  B.which

  C.as

  D.where

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• 4Please don't get too close to the building______ roof is under repair.

  A.which

  B.of which

  C.whose

  D.that

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• 5It's helpful to put children in a situation _____ they can see themselves differently.

  A.that

  B.when

  C.which

  D.where

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• 6My friend, Tom, may have missed taking the flight to Africa, ______ he can't arrive for another hour.

  A.in which case

  B.in that case

  C.in case

  D.in any case

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• 7Do you remember those days ______ we spent very happily along the seashore last summer?

  A.when

  B.which

  C.where

  D.who

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• 8I have bought the same trousers _________ he is wearing.

  A.as

  B.that

  C.which

  D.with

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• 9The boss refused to sell the car for ________ he thought was not satisfactory,

  A.that

  B.which

  C.how

  D.what

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• 10There are many reasons why some children have bad manners, ______ is the ill information on the Internet and in TV programme．

  A.one of them

  B.it

  C.one of which

  D.that

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