a or an
___ orange
an orange
I love ____ nature.
I love nature.
___ wall
a wall
Mr Smith is _____ head of the school.
Mr Smith is the head of the school.
Picasso was artist.
Picasso was an artist.
____ university
an university
_____ people usually like sweets.
People usually like sweets.
____ hour
an hour
____ students in our class are very clever.
The students in our class are very clever.
_____ uniform
a uniform
I love _____ horror films.
I love horror films.