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-before lighting burner, you should close the _______ and the ________ on the burner. -the gas should always be turned on and off at the___________. -the burner should be lit by holding the _________
-before lighting burner, you should close the _______ and the ________ on the burner.
-the gas should always be turned on and off at the___________.
-the burner should be lit by holding the _________ over the burner and striking a spark.