Choose appropriate option to complete the following sentence: Vikram wrote ________ letter to his university yesterday but he forgot to post it.
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Use "a" before words that start with consonant sounds and "an" before words that start with vowel sounds. Ensure you understand whether the noun is specific or general when choosing the article.
"A" is the correct indefinite article for a singular, countable noun ("letter") that is not yet specific. Since it is not referring to any particular letter, "a" is used.
Understanding Articles: "A" is used before words starting with consonant sounds, and it indicates something indefinite or non-specific.