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Could anyone please tell me what the rule is called when you drop the 'e' off the end of a word to add 'ing' - such as the word having. I'm sure I learnt at school that this rule is called something specific, but cannot remember. Many Thanks Tess.
Dropping the 'e' when you add 'ing' 
Re: Dropping the 'e' when you add 'ing' 
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