A．It was invented by a doctor one hundred years ago.
B．It is the international language for trade, science and diplomacy.
C．There are fifteen million people speaking it throughout the world.
D．It was the second language in English-speaking countries.

A．The typist has completed it already.
B．He’ll need some help later on.
C．He completed the typing himself.
D．He wants the woman to type more carefully.