Question

I like to give _ useful present (a,an, the)​

Answer 1

Answer:

an

Explanation:

Because you cannot use 'a' when the word you are referring to starts with a vowel.

Answer 2

I like to give a useful present.

Why we are putting 'a' instead of 'an' before useful?

⇒ A useful. Although U is a vowel, the pronunciation of useful begins with a Y sound (yoos-ful) which is a consonant sound.