What's this box made of?
It's made of wood.
What material is this?
paper
What are these bottle caps made of?
They're made of metal.
What material is this?
cotton
What's this tube made of?
It's made of metal. (the top is made of plastic.)
What material is this?
glass
What's this jar made of?
It's made of glass.
What's this bowl made of?
It's made of wood.
What material is this?
It's Tetra Pak (brik).
What material is this?
metal (aluminium)
What are these cans made of?
They're made of metal. (aluminium)
What material is this?
rubber
What's this box made of?
It's made of cardboard.
What material is this?
cardboard
What's this glass made of?
It's made of glass
What material is this?
metal
What material is this?
wood
What material is this?
wool
What's the jumper made of?
It's made of wool. (wool fabric)
What's this bag made of?
It's made of plastic.
What material is this?
plastic
What's this tin made of?
It's made of metal.
What are these shirts made of?
They're made of cotton. (cotton fabric)