Which word would best fill the sentence: I am so () for arriving late.

• A. Sorry
• B. Worry
• C. Hangers
• D. Closet

Answer: (A)

This sentence is looking for the word that expresses apology. I am so sorry for arriving late uses sorry as an adjective after am, with so as an intensifier to show stronger remorse, and the phrase for arriving late explains the reason.

Worry wouldn’t fit because the intended meaning is about expressing remorse, not concern; if you wanted to express concern you’d say I am so worried about arriving late, which changes the sense and uses a different preposition.

Hangers and closet are unrelated nouns, so they wouldn’t make sense in this sentence at all.

So the best choice is sorry, giving a natural, correct apology sentence.