Based on the clue 'add a letter to rode you get this public exhibiti...', what is the answer?

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 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 smile you get this figure of spee...', what is the answer? Based on the clue 'add a letter to surgeon youll net yourself this f...', what is the answer? Based on the clue 'add a letter to the middle of round to get this ot...', what is the answer? Based on the clue 'add a letter to the name of a young fictional rabb...', what is the answer?