Based on the clue 'add a letter to ignite it becomes this brown coal', what is the answer?

Based on the clue 'add a letter to came to get this word for a minor ...', what is the answer? Based on the clue 'add a letter to crime you get this peninsula in s...', what is the answer? Based on the clue 'add a letter to glen you can take it in this way ...', what is the answer? Based on the clue 'add a letter to hotel you end up with this less e...', what is the answer? Based on the clue 'add a letter to lien you get this word for a fore...', what is the answer? Based on the clue 'add a letter to neuron instead of a nerve cell it...', what is the answer? Based on the clue 'add a letter to reel youll be able to do this tak...', what is the answer? Based on the clue 'add a letter to rode you get this public exhibiti...', what is the answer?