1.I wrote on my journal while I listened to (softly, soft) music.

2.Classes at SEO go by so (slow, slowly) during the summer.

3.As she presented her work, her voice sounded (different, differently).

For number one it would be soft. ("on my journal" should be "in my journal" instead)

number two would be slowly
number three would be different

"would be"? Or "is"?

1. In the first sentence, we need to determine which form of the adverb "soft" to use. To do this, we need to understand the rule for using adverbs with verbs. Adverbs typically modify verbs, adjectives, or other adverbs. In this case, the adverb is modifying the verb "listened." Since we are describing how the action of listening was done, we should use the adverb form "softly."

2. In the second sentence, we need to decide between the adverb form "slowly" and the adjective form "slow." Again, we need to consider the rule for using adverbs with verbs. Adverbs are used to describe how an action is done, so in this case, we should use the adverb form "slowly" to describe how the classes go.

3. In the third sentence, we need to determine whether to use the adjective form "different" or the adverb form "differently." To make the decision, we need to consider what is being modified. In this case, the verb "sounded" is being modified, describing how her voice was heard. Since we are describing the manner in which the voice sounded, we should use the adverb form "differently."

Overall, understanding the difference between adverbs and adjectives can help determine which form to use in each sentence. Adverbs are used to modify verbs, adjectives, or other adverbs and describe how an action is performed, while adjectives are used to describe nouns or pronouns.