Question

copper is _ useful metal​

Answer 1

Answer:

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Explanation:

The answer is: Copper is a useful metal. "A" is used for words which begins with a consonant sounds and "An" is used for words which begins with a vowel sound like a,e,i,o,u. Using "A" or "AN" depends upon the sound rather than its spelling.

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Answer 2

Answer:

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copper is most useful metal.

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