What machine is it?
It's a crane.
What machine is it?
It's a bulldozer.
What machine is it?
It's a digger.
What machine is it?
It's a concrete-miver.
What machine is it?
It's a tunnel boring machine.
What machine is it?
It's a truck/lorry.
Where are they standing?
They're standing in a trench.
What's his job?
He's an engineer.
What's this?
It's a tunnel.
What have they broken?
They've broken a tube.
What is the hen walking on?
It's walking on concrete.
What type of bridge is it?
It's an arch bridge.
What type of bridge is it?
It's a beam bridge.
What type of bridge is it?
It's a suspension bridge.
What is a suspension bridge supported by?
It's supported by strong cables and tall towers.
What is the simplest type of bridge?
It's a beam bridge.
