Question

copper is _usefull mettel​

Answer 1

Explanation:

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.

Answer 2

Answer:

this is your answer my dear friend