1. It is a word that modifies (describes) a verb, an adjective, another adverb.
a noun
b adjective
c adverb
d pronoun

2. It is a word or group of words used before a noun, pronoun, or noun phrase to show direction,place, location, to introduce an object.
a noun
b preposition
c article
d interjection

3 These are words that show an action (sing), occurrence (develop), or state of being (exist).
a verbs
b noun
c article
d interjection

4. It is a word that takes the place of a noun.
a adjective
b pronoun
c verb
d adverb