How can you stepped in to the lab with your shoes on? You are ________ to take them off before you enter it．I told you so．

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• 1I should consider _________ in my duty if I did not take immediate action．

  A.myself failing

  B.me to

  C.myself to

  D.failing

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• 2So biologists were ________ early this year when with the help of the Navy, they were able to ________ a particular blue whale for 43 days, monitoring its sounds．

  A.delighting：keep track of

  B.delighted：keep in touch of

  C.delighting：keep an eye out

  D.delighted：keep track of

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• 3________ reasonable, the idea he ________ to create a friendly environment attracted much public attention．

  A.Sounded; came about

  B.Sounded; came across

  C.Sounding; came up with

  D.Sounding; came along

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• 4While hiking, you should ________ for dangers, ________ spiders, snakes or poisonous plants．

  A.watch out; for example

  B.take care; for example

  C.watch out; such as

  D.take care; such as

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• 5The driver pulled ________ his car when the traffic lights changed．

  A.on

  B.up

  C.together

  D.at

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• 6His uncle ________ for more than 9 years．

  A.has come here

  B.has started to work

  C.has lived there

  D.has left the university

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