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Many airlines now allow passengers to print their boarding passes online     their valuable time. ...

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doesn't allow  isn't allowed   hasn't allowed  didn't allow  
is of little importance.  is close to that of low cost carriers.  decides whether they will survive.  should not be ignored.  
the banks now have a maximum of five banking days for the examination of documents  the banks now have a maximum of seven banking days for the examination of documents  Bs/L may now allow transshipment  Bs/L may not allow transshipment  
They do not book their seats in advance.  They do not sit on the seats they are supposed to take.  They do not travel on the flight they have booked.  They do not pay in advance for the seats they book.  
People stop traveling in Europe.  Airlines suffer from the loss of planes.  It becomes dangerous for animals to eat outside.  Farmers have lost many of their animals.  
the tourist industry is experiencing an all-time low.  there is no increase in the number of passengers.  there are more seats on the planes than needed.  the competition between airlines is stron  
so allowing    thus allowing    so to allow    thus to allow  
the tourist industry is experiencing an all-time low.  there is no increase in the number of passengers.  there are more seats on the planes than needed.  the competition between airlines is strong.  
making sure the departures are not delayed.  the efficient handling of luggage.  speeding up customs procedure.  the improvement of the condition of waiting lounges.  
keep in mind the need of the executives only.  satisfy the need of the low fare passengers at the expense of the executives.  try to attract as many passengers as possible by reducing fares.  cater to the need of passengers sitting at both ends of the jets.  
so allowing    thus allowing   so to allow    thus to allow  
People stop traveling in Europe.  Airlines suffer from the loss of planes.  It becomes dangerous for animals to eat outside.  Farmers have lost many of their animals.  
looking    looked    to look    having looked  
making their seats more comfortable.  providing better food during flights.  showing more movies during the long flights.  offering sleeperettes to first-class passengers.  
is not experiencing a difficult time.  faces rising customer demands.  has fewer opponents after 9/11.  provides good service despite fewer workers.  

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