A．How many native speakers it had in Shakespeare’s time.B．The number of people with an adequate working knowledge of it.C．The situations where a common language is needed.D．The purposes for people to learn a second, language.
A．How many native speakers it had in Shakespeare’s time.
B．The number of people with an adequate working knowledge of it.
C．The situations where a common language is needed.
D．The purposes for people to learn a second, language.