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These years, the air quality has become     (bad) than before.

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The factories will test the air every day.  Scientists will test it every day.  A report will be published.  They will ask homeowners  
The factories will test the air every day.  Scientists will test it every day.  A report will be published.  They will ask homeowners.  
that    it    as    where  
A. it    one    that    the one  
the one    that    one    it  
A. it    one    that    the one  
descriptions  compromise  concerns  emergency  
as       it      what    it  
quality of air filtration  effectiveness of lubrication  type of fuel used  all of the above  
adapt    attach    adopt    adjust  
that    it    as    what  
that    it    as    what  
take part in    take action    take place    take risks  

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