A and An are articles. They are used before a noun. We use an only before words that begin with vowel sounds (a,e,i,o,u).
Q. Fill in the blank with A or An.
- Miss Mita bakes __________ cake.
- I have __________ apple.
- Sit on __________ chair.
- Eat __________ orange.
- Put it in __________ box.