Complete the sentences using while. Follow the model on page 13. 
 Danger of an electric shock disappears when the faulty parts earthed .
 One should work on the circuit when the power is off. One should work on the circuit when the power is .
 Contact with dead conductors is safe ... .
 In dry air the risk of an electric shock decreases ... .
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							Complete the sentences using while. Follow the model on page 13.  Danger of an electric shock disapp...
							 
 
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