Decide if you write a/an/the or nothing in the following sentences. You must write the complete sentence to get the point.
Is there _____ armchair in the room?
Where are _____ apples?
There's ____ amazing picture on the wall! ____ picture is really big!
There are lots of _____ books in this bookcase.
There's ___ dog on the street.
This man is ____ vegetarian.
It was a sunny day. ____ sky was blue.
I heard a knock on ____ front door.
I have ____ headache.
There's ___ hole in your shirt!
Sarah has ___ amazing memory!