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It is essential that the two groups    kept separate.(  ) A.can be B.should be C.must be D.will be...

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A telephone is essential.  What many people think necessary is not necessary at all.  You would not use a telephone unless you were in a hurry.  A car is essential for a taxi-driver.  
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It is secreted by the kidneys into the bloodstream.  It is hormone that prepares the body for emergencies.  It is the only useful hormone produced in the body.  It is essential to sustain life.  
correct immediate misbehavior.  leave permanent scars on the bedy.  lead the child to the fight course of life.  evade discussion of what’s wron  
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correct immediate misbehavior.  leave permanent scars on the bedy.  lead the child to the fight course of life.  evade discussion of what’s wrong.  
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essential to   essentially for   essential   essentially  
It is secreted by the kidneys into the bloodstream.  It is hormone that prepares the body for emergencies.  It is the only useful hormone produced in the body.  It is essential to sustain life.  
It is secreted by the kidneys into the bloodstream.  It is hormone that prepares the body for emergencies.  It is the only useful hormone produced in the body.  It is essential to sustain lif  
vital, acting    vital, acts    essential, acting    essential, acts
  
to  with  at  on  
It is secreted by the kidneys into the bloodstream.  It is hormone that prepares the body for emergencies.  It is the only useful hormone produced in the body.  It is essential to sustain lif  

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