Scientists ____ thousands of chemicals before they decided on the right one in the end.

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• 1---So why didn’t you meet us on Saturday then? ---I’m sorry about that--- I _________ --- I thought you were meeting next Saturday.

  A.get the fact straight

  B.have a good nose for it

  C.play a trick of the trade

  D.get the wrong end of the stick

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• 2My grandfather keeps healthy by ______ for half an hour every morning.

  A.working out

  B.acting out

  C.taking out

  D.looking out

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• 3I was really too busy with my homework and I couldn’t help ____ the housework.

  A.doing

  B.do

  C.did

  D.done

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• 4The USA once ___ ___ war against Japan in 1945 and now it is bombing Liby

  A.A.announced

  B.declared

  C.commented

  D.stated

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• 5Order me a pot of tea; I’m _______ thirst.

  A.dying of

  B.dying out

  C.dying to

  D.dying down

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• 6--- What are you reading there, Susan?   --- Nothing interesting. I am just ________ the pages to kill time.

  A.turning over

  B.turning up

  C.turning around

  D.turning down

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• 7I never saw him,         I can remember, reading anything but newspapers.

  A.as far as

  B.as soon as

  C.unless

  D.until

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• 8July the 13th，200l _______ a very bright night in Beijing that will never fade from memory．

  A.contradicted

  B.distributed

  C.witnessed

  D.Substituted

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• 9—How are your children in their new home? —Fine. The good thing is that they"ve _______very easily to new environments.

  A.used

  B.belonged

  C.adapted

  D.turned

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• 10—Have you heard that Tom was given a good beating by his father last night? —He _____ it. He was making trouble everywhere all the time.

  A.made

  B.got

  C.gained

  D.deserved

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