countable or uncountable

Let’s drink __ coffee or two?

• a

• ----

This is ___ Chinese character.

• --

• a

Looking around in natural caves will give the highest chance of getting ___iron

• a

• ---

Press with ___iron

• an

• --

You have ___ hair on your jacket.

• a

• --

She has ___beautiful blond hair.

• a

• ---

Someone threw __ stone at the car.

• a

• --

The floors are made of __ stone.

• a

• -

I've got __ bad cold.

• a

• --

• Ask your teacher for _ advice on how to prepare for the exam.

• a

• --

• an