Passage One Questions 11 to 13 are based on the passage you have just heard.

A．When we are tired.
B．When we have a balanced diet.
C．When we can relax.
D．When we do regular exercise.

A．He had better stop taking the cough medicine.
B．He will take another medicine instead of this.
C．He should have patience to cure his cough.
D．He should take the medicine for a long time.