单项选择题
A.what he does out of class B.what he learns in books C.his place in society D.his lessons in school
A．live a better life when they grow up B．know better how to behave properly in their future life C．understand better the virtues they learn in books D．all of the above
A．the passing of information and making of decisions B．the meeting and hitting back of the ball C．the coordinated movements of our eyes, brain and muscles D．a lot of practice before playing tennis