To start with, the error is not in ‘I’m’. The contraction is 100 per cent correct as we have in the clause, especially if the statement is taken from a speech ...
We know what an adjective is — it’s a word that modifies a noun. What about a word that modifies an adjective? That’s an adverb, of course (adverbs also modify verbs and other adverbs). OK, I’m just ...