Question

There is mark ____ your shirt. (articles)​

Answer 1

Answer:

there is a mark on your shirt

Answer 2

Answer:

There is a mark on your shirt.

Explanation:

Article 'a' will be used in the question because 'mark' is singular in nature.

It will carry a because when the indefinite article precedes a word beginning with a consonant sound we use 'a'.

on the other hand 'an' is used when it precedes a word starting with a vowel sound.