If ____ unsolved, the problem of food safety may lead to more serious results.

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• 1Anyone can become a better scholar if he or she ________ .

  A.wants to become

  B.wants to do

  C.wants to be

  D.wants to

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• 2When ________, the museum will be open to the public next year.

  A.completed

  B.completing

  C.being completed

  D.to be completed

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• 3When ____about his family, he is always refusing to answer.

  A.asked

  B.asking

  C.being asked

  D.mentioned

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• 4Mr Black, ________ born in a poor family, now is the boss of a big company.

  A.was

  B.he was

  C.although

  D.who he was

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• 5The hotel will be the highest building in the city when________.

  A.being completed

  B.it will be completed

  C.to complete

  D.completed

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• 6He has been to America, and ________ He has been to America, and ________ .

  A.his sister does so

  B.so does his sister

  C.nor does his sister

  D.so his sister does

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• 7The flowers his friend gave him will die unless ______ every day.

  A.watered

  B.watering

  C.water

  D.to water

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• 8There are some mistakes in this composition. If ________ , please correct them.

  A.finding

  B.having been found

  C.found

  D.find

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• 9________ the sad news, tears came into her eyes.

  A.While hearing

  B.When hearing

  C.He heard

  D.When she heard

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• 10If ________ , you may ask him for help.

  A.you were in difficulty

  B.in difficulty

  C.it is difficulty

  D.you are difficulty

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