单项选择题

The purpose of doctors holding laughter clinics is ______.

A．to give better condition to their patients
B．to improve patients' health
C．to make patients smile
D．to prove smile and laughter }lave the same effect

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热门试题

单项选择题

In one experiment, the students who ______ tolerated the pain for the longest time.

A．listened to sad music
B．listened to pop music
C．listened to different programs
D．listened to a funny program

单项选择题

You should think for yourself instead of just ______ others.

A．to obey
B．obeying
C．obey
D．to be obeyed