单项选择题
A．the results of the two matches B．the number of the teams which played last night C．how many wins the BBS has had altogether D．the Wingers has had one win and four defeats recently
A．to give better condition to their patients B．in order to improve patients' health C．to make patients smile D．to prove smile and laughter have the same effect
A．listened to different radio programs B．could produce a kind of chemicals C．don't have stress or pain D．listened to a funny program