Answer:
Preposition - in, during, before, for
Adjective - frantic
Adverb - always, inevitably
Explanation:
Prepositions are words that (usually) precede nouns or pronouns, expressing their relations to other words in a clause (e.g. direction, location, time). They are followed by an object, which can be a noun, noun phrase, or pronoun. Some prepositions are: in, during, before, for.
Adjectives are words used to modify (describe) nouns and noun phrases. In this sentence, the only adjective is frantic. Some more adjectives are: big, red, beautiful, happy...
Adverbs are words used to modify verbs, adjectives, or other adverbs. Adverbs in the given sentence are always and inevitably. Some more adverbs are: beautifully, quickly, well, loudly...