To be sure, some insects can build complex societies ________ different types of individuals performing different tasks.

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• 1I suppose that when I come back in ten years’ time all these old houses ________ down.

  A.will have been pulled

  B.will have pulled

  C.will be pulling

  D.will be pulled

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• 2Jim is sorry ________ so impolite to your guest last Saturday.

  A.to be

  B.having been

  C.being

  D.to have been

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• 3He is ________ a writer as a reporter.

  A.more

  B.rather

  C.not so much

  D.not much

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• 4Orlando, a city in Florida, ________ for its main attraction, Magic Kingdom.

  A.which is well known

  B.is well known

  C.well known

  D.being well known

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• 5Most parents encourage their children to take an active part in social events, ________ those events do not interfere with their studies.

  A.lest

  B.though

  C.unless

  D.provided

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• 6The students will put off the outing until next week, ________ they won’t be so busy.

  A.when

  B.as

  C.since

  D.while

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• 7I have not found my book yet; in fact, I am not sure ________ I could have done with it.

  A.whether

  B.why

  C.what

  D.when

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• 8If you do not fasten your safety belt, your chances of being ________ will be greater.

  A.beaten

  B.hurt

  C.damaged

  D.stricken

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• 9“ ________” for many years, the writer suddenly became famous.

  A.Having ignored him

  B.To be ignored

  C.To have been ignored

  D.Having been ignored

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• 10This bird’s large wings ________ it to fly very fast.

  A.able

  B.enable

  C.unsure

  D.cause

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