Please choose the most appropriate answer for each sentence.
  • 1

    In the ecological balance of nature, there is a place for every kind of bug. However, ..... are puzzled as to where a bedbug should fit into the scheme of nature.

  • 2

    These bugs seem to have survived more than a few thousand years due to a hearty resilience and ..... reproduction.

  • 3

    The history of the ..... bedbug dates back to some of the earliest civilizations.

  • 4

    Mankind has curiously wondered where the bedbugs originated and how they managed to ..... the world.

  • 5

    Bedbugs were presumably first noticed by colonists in the early 1700's, but they are not ..... to America. Many believe they came from Europe on sail boats, infested in the sailors' bedding.

  • 6

    For most of the population, living with bedbugs was simply a way of life as the standard of cleanliness was not as ..... as it is currently in most countries.

  • 7

    Not surprisingly, when higher standards of hygiene were ....., as well as providing public education of the dangers of the bugs, steps were taken to destroy all kinds of insects that invaded people's lives.

  • 8

    These tiny ..... creatures were brought under control after the pesticide DDT was used, but when it was banned in 1970, the bugs became extremely prolific.

  • 9

    In the past few years, bedbug ..... have dramatically increased, equalling what was previously known to exist in the 16th century.

  • 10

    One reason for the increase is because society tends to be much more ..... than in earlier times, traveling to various countries on vacations, unkowingly carrying the pests from one hotel to another or to their own homes.

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