USE A or AN

Use A before nouns with consonant sound .
Use AN before nouns with vowel sound .

I am ____________________ good student .
He is ____________________ businessman .
He is ____________________ lawyer .
It is ____________________ apple .
She is ____________________ honest woman .
It is ____________________ good movie .
He is ____________________ pilot .
It is ____________________ egg .
It is ____________________ old university .
This is ____________________ insect .
It is ____________________ ordered notebook .
It's ____________________ easy question .
It is ____________________ alarm clock .