Question

Fill in the blank with the correct option:

I have been waiting for you for _____ hour

• A. a
• B. an
• C. the
• D. a few

Answer 1

The correct option is B an

1. An/A' is used as an indefinite article for a thing or person when the reader doesn't know which one we are referring to out of many nouns. It states the random nature of the subject.
   
2. 'The' is used as a definite article for a thing or person when the reader knows which one we are exactly referring to. It states the specific nature of the subject.

Option C is incorrect as 'The' doesn't suit with the meaning of the sentence as it doesn't tell about the amount of time. In Option D 'a few' is used inappropriately as a few is used with plural countable noun. Option A is incorrect as 'A'. In this sentence although 'Hour' begins with a consonant, it has a silent 'H'. Hence it has a vowel sound 'our' and requires 'the indefinite article 'An' . Hence Option B is grammatically correct.