Any adverb. That's what an adverb does, to any verb.
Examples for drive would be
Drive Carefully
Drive Slowly
Drive Dangerously
Drive Quickly
An adverb can modify or describe a verb.
Yes. An adverb can modify a verb, an adjective or another adverb.
Yes, an adverb modifies a verb.
Adverb phrases modify the verb, adjective, or adverb of the sentence.
No. An adverb is a modifier that can modify a verb (or an adjective, or another adverb).
An adverb modifies the meaning of a verb or another adverb. An example of modifying a verb is, "quickly jumped." Quickly modifies the verb, jumped. If you say, "very quickly jumped," you are using very to modify the adverb quickly.
You could modify a phrasal verb (more than one word), or modify an entire clause with an adverb such as "fortunately."
No. It is a verb.
Alone is not an adverb. An adverb modifies a verb. Alone does not modify a verb (is not an adverb).
noun, verb, or another adverb
An adverb is a word that modifies a verb.
Adverbs can modify verbs, e.g. He ran (verb) frantically (adverb). They can also modify adjectives and other adverbs, e.g. That is absolutely (adverb) ridiculous (adjective).