Tom: You are playing guitar well. Can you read music Charles: No, I don"t. I just listen to songs on the radio and then play them until they sound right. Tom: ______. Charles: No, really.

A．Debate practice sessions.
B．Solid training.
C．Research on Japanese.
D．Knowledge of parliamentary procedure and public speaking.

A．help customers with IT problems
B．purchase IT products for the company
C．sell computers to customers
D．sell IT information to customers