A．it is cheaper and faster than ordinary mail.
B．it is faster and not much more expensive than mail.
C．it can send things that could not be expressed by telex.
D．the Royal Mail could not reach places abroad.

A．Charles bought a photocopier because all sorts of people need it.
B．Charles bought a photocopier by accident.
C．There was no place nearby to provide the photocopy service.
D．Few people send fax messages abroad.

A．Engineers.
B．Shopkeeper.
C．Professional people.
D．Surveyors.