People often use the natural world as inspiration to design and invent new ______ .

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• Choose the correct answer in each sentence.

  To avoid unexpected___________, ask the hotel desk clerk to explain which services are complimentary.

• Choose the correct answer in each sentence.

  According to corporate guidelines, all customer calls should  _____________  within two minutes.

• Extinction means a situation ............ a plant, an animal or a way of life stops existing.

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• I____ in the US for one year, but I still find it difficult to communicate with the American. 

• I enjoy ............. busy. I don’t like it when there is nothing     .

• My sister ............ for you for an hour.

• Choose the correct answer in each sentence.

  World Photo is currently on the lookout for ------- and knowledgeable wildlife photographers.

• Choose the correct answer in each sentence.

  Once a seasonal item is sold out, it will not be available for purchase   ____________ the following year.

• Choose the correct answer in each sentence.

  _____________ , items sold at the Scottville Craft Fair are unique and of very high quality.

• Choose the correct answer in each sentence.

  By protecting tropical forests, we can ------ reduce global warming emissions.

• The new trains have more powerful engines and are; _________, faster.

• The winner of the contest was given a(n) ............... for her excellent performance.

• Choose the best answer.

  The first part of the test was easy; the second, ________, took hours.

• Choose the correct answer.

  Can you make a ________ estimate of how much our expedition in the desert may be?

• Dr. Sales is a person .................

• I ...............  the living room by the time Dad comes home. He will be surprised.

• A number of young teachers nowadays ............... themselves to teaching disadvantaged children.

• Natural  _______ are grouped into two categories, renewable and nonrenewable.

•  -“where can we meet ? ”

• Choose the best answer among A, B, C or D that best completes each sentence: I guess I’m a soft touch. I just lent Jane some money for lunch….. she never paid me back my last loan.