Which of the following is not the symptom of a cold?
A. a runny nose
B. a fever
C. a cough
D. a headache
When you have a tooth problem, whom you should go for help?
A. medical geneticist
B. ENT specialist
C. dentist
D. audiologist
In China, Tai chi practising is popular among _______.
A. the young
B. the middile-aged
C. the adult
D. the old
I am terribly sorry to say _______ I cannot attend the meeting today.
A. that
B. which
C. when
D. why