Step 1 — Understand the word 'still':
The word still in English is versatile and can function as a noun, adjective, verb, and adverb depending on the context.
Step 2 — Check each usage:
1. Noun: “He wanted some stills for a magazine.” → Here, stills means still photographs (single images, not moving). Correct as a noun.
2. Adjective: “Still waters run deep.” → Here, still describes the waters as calm, not moving. Correct as an adjective.
3. Verb: “The good news makes me still my fears.” → Here, still means to quieten or make calm. Correct as a verb.
4. Adverb: “Will you still love me when I am old and gray.” → Here, still means ‘continuing to’ or ‘even then.’ Correct as an adverb.
Step 3 — Conclude:
All four usages given (Noun, Adjective, Verb, Adverb) are grammatically correct and meaningful.
Answer: The correct match is All of the above (1, 2, 3, and 4).