Solve this crossword puzzle using the provided clues.

Here's the solution to the crossword puzzle:

Clues across:

• 2 every year (adverb of frequency): ANNUAL
• 4 opposite of always (adverb of frequency): NEVER
• 7 to do something in a thorough manner (adverb of degree): EXTREMELY
• 8 every day (adverb of frequency): DAILY

Clues down:

• 1 in a slight degree (adverb of degree): SLIGHTLY
• 3 in usual frequency (adverb of frequency): REGULARLY
• 5 to the end (adverb of degree): FULLY