Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need. It has been demonstrated that rats will, when given a choice over a period of time, prefer water with vitamins to water without vitamins even

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• 1 Suicide has been a cause of concern in most societies for a long time. The classical Greeks, for e
   

  A.The classical Greeks did not know the existence of suicide

  B.Suicide has always been prevalent in all parts of the world

  C.In today's society, there are quite a number of people who commit suicide

  D.Nowadays suicide is not as common as it was in the past

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• 2What the teacher and the students want to say _____ that either of the countries _____ beautiful.

   A.are, are B.is, is C.are, is D.is, are

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• 3 No teacher and no student _____ .
   

  A.are admitted B.is admitted C.are admintting D.is admitting

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• 4 I had hoped Mr. Smith______ me an early reply.
   

  A. gave B. to give

  C. giving D. would give

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• 5 We'll leave as soon as it________ raining.

  A. is stoping B. stops

  C. will stop D. shall stop

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• 6 You can' t hear what I' m saying __________ you stop talking.

   A. only if

  B. unless

  C. lest

  D. except that

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• 7This election had many firsts and many stories that _______ for generations.

  A. was telling B. will be told C. tells D. was told

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• 8He abandoned a career that ___ to his becoming one of the most influential people in the world.

  A. could have led B. would lead C. should have led D. must lead

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• 9If you that night, you might have been too late to get your ticket.

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• 10If a better material ____, the strength of the part would have been increased.

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