The police at Denver International Airport examined a bomb threat against a United Airlines flight to San Francisco,____________ the flight for hours.

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• 1Remember _______ the baby this afternoon. Ok, I will. 

  A.having picked up

  B.picked up

  C.picking up

  D.to pick up

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• 2Happy times usually pass quickly without _______ .

  A.noticing

  B.being noticed

  C.having noticed

  D.to be noticed

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• 3When I got back home I saw a message pinned to the door ____’'Sorry to miss you; will call later.'' 

  A.reading

  B.reads

  C.to read

  D.read

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• 4________ to sunlight for too much time will do harm to one's skin.

  A.Exposed

  B.Having exposed

  C.Being exposed

  D.After being exposed

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• 5The man is hard _______ .

  A.to get along

  B.to be got along with

  C.to get along with

  D.getting along

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• 6John rushed out in a hurry, ____ the door ____.

  A.leaving ; unlocking

  B.left; unlocked

  C.leaving; unlocked

  D.left; unlocking

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• 7______ where to go, he asked a passer-by for help.

  A.Having lost his way and didn't know　

  B.Losing his way and didn't know

  C.Having lost his way and not knowing　

  D.Lost his way and didn't know

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• 8Go to bed right away．Don't forget you need to get up as early as you can ______ the early train．

  A.catch

  B.catching

  C.caught

  D.to catch

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• 9________ with so much trouble, we failed to complete the task on time.

  A.Faced

  B.Face

  C.Facing

  D.To face

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• 10To some people, happiness is __________ by family and friends, while to others, it means ___________ success.

  A.being surrounded ; achieving

  B.being surrounded ; to achieve

  C.to surround ; achieving

  D.surrounding ; to achieve

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