Question

____ ATM is ___ useful machine. Fill in the blanks with suitable articles.

Answer 1

Answer:

An ATM is a useful machine.

Explanation:

ATM is a thing so use "An"

Answer 2

An ATM is a useful machine.

• articles are words that come before a noun or a pronoun.
• there are three articles in grammar - a, an and the.
• a is used for common noun.
• an is used for common nouns that starts with any vowel - a, e, i,o and u.
• the is used for proper noun.
• the article used above are - a and an.
• the atm machine referred here is a common and because of the pronunciation of useful the article an is used.