Answer:
The answer is: too
Explanation:
Let's remember that an adverb modifies a verb or an adjective. These words provide context, we normally spot an adverb as many of them end in -ly, however, there are lots of them which don't precisely follow "this rule", the example here is "too" which in this context means: a lot, very much, to excess... and it is modifying the adjective (descriptive word) good, it is intensifying it. The other words are simply verbs, nouns, etc..
