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You must shut the gas supply     if you leave the house.

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supply    offer    give    provide  
burning; shutting    burning; shut    burnt; shutting    burnt; shut  
might    must    should    will  
might    must    should    will  
must    can    mustn’t    can’t  
radio    traffic lights    gas    tap  
stop the combustion air supply  engage the jacking gear  secure the lube oil pump  shut off the fuel at the day tank  
put down   put on   put off   put out  
secure the ventilation  find a soda acid extinguisher  shut off the fuel oil supply  secure the generator  
radio    traffic lights    gas    Tap  
Move the fuel control mechanism to the no fuel position  Block the fuel supply by closing the master fuel valve  Shut off the fuel supply and block the flow of intake air  Relieve all pressure in the fuel system  
air supply is shut off  fuel supply is shut off  water supply is shut off  safety valve lifts  
look for a CO2 extinguisher  use a soda acid extinguisher  shut off the fuel supply  smother the fire with rags  

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