Question

1. which of the following cannot be modified by adverbs?

other adverbs
nouns
adjectives
verbs

Explanation:

Adverbs can modify other adverbs (e.g., "very quickly"), adjectives (e.g., "very beautiful"), and verbs (e.g., "run quickly"). Nouns are typically modified by adjectives (e.g., "red apple") or determiners, not adverbs.

Answer:

nouns