You have heard that your friend, Jack, wishes to sell his walkman. Write him a note expressing your interest in it, asking him about its condition and offering a price for it.
Marks will be awarded for content, organization, grammar and appropriateness.

A．first appeared in England
B．had various types
C．was only sponsored by the nobility
D．follows two classical rules

A．keep fit by going in for physical activities
B．keep mentally active by challenging their brains
C．maintain mental alertness through specific training
D．maintain a balance between individual and group activities