The question______new measures should be taken to control the terrible air pollution is______puzzles scientists a lot.

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• 1Mother gave me a promise_____I made progress in my English she would take me to travel .

  A.that;

  B.that if

  C.that whether

  D.whether

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• 2If someone falls off the ladder and gets seriously hurt, you'd better leave him _____ he falls and try to get help.

  A.before

  B.when

  C.where

  D.what

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• 3— Are you in favour of Tom's suggestion________we work around the clock to meet the deadline? — No. But ______ Jimmy suggested to me sounds practical.

  A.that; what

  B.that; that

  C.which; that

  D.which; what

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• 4_______ she could not persuade me to accept her idea that money means everything.

  A.Try as she might

  B.Might she as try

  C.As she might try

  D.She might as try

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• 5_______ she was invited to the ball made her very happy.

  A.Whether

  B.Because

  C.What

  D.That

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• 6If you are traveling ______ the customs are really foreign to your own, please do as the Romans do.

  A.in which

  B.what

  C.when

  D.where

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• 7I won't forgive them for what they said, ______ they apologize.

  A.so that

  B.even if

  C.as soon as

  D.in order that

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• 8— Do you have the time? I've got something to tell you. — Ok, ______ you make your story short.

  A.now that

  B.even if

  C.so long as

  D.in case

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• 9--- Who should be responsible for the accident? --- The boss, not the workers. They just carried out the order _______.

  A.as told

  B.as are told

  C.as telling

  D.as they told

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• 10Even if there is no scientific proof ______ secondhand smoke causes cancer, there is no reason why nonsmokers should be forced to take this risk.

  A.which

  B.that

  C.when

  D.where

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