No, it is a helping verb, either the past tense or conditional form of "can."
No, it is not an adverb. It is a negative verb form written as a conditional contraction. It means "could not" where not by itself would be an adverb.
No, it is a verb phrase. You could add an adverb to it, as in "should have seen CLEARLY."
No. Wished is a past tense verb, and a past participle(to wish). But it could form a participial phrase to function as an adverb.
No, it is an adjective. The adverb form is beneficially.
No, it is not an adverb. Became is the past tense of the verb become.
The adverb could be hurriedly (hastily).
The adverb for "energy" could be "energetically."
No. Bewilder is a verb. The adverb form could be "bewilderingly."
The word there could be an adverb applied to a street or intersection.
Our trip could turn out badly. Bad is not an adverb. Badly is an adverb.
The adverb profusely could describe sweating (action). The adjective sweating (e.g. sweating men) has no adverb form, but the adjective "sweaty" has the rarely-used adverb form "sweatily."
"To become famous" is an infinitive phrase. It could serve as a noun, adjective, or adverb, but there is no adverb in it.
No,it is not an adverb. Complaint is a noun, related to the verb complain. One adverb form could be "complainingly."
It is a prepositional phrase. It could be used as either an adjective or an adverb.
No. Disbelief is a noun. One adverb form could be "disbelievingly."
It can be, because slow is both an adjective and adverb. But the comparative form of the adverb could also be "more slowly."
No, it is not an adverb. It is a negative verb form written as a conditional contraction. It means "could not" where not by itself would be an adverb.