If you have a toothache you should go to see a.A. policemanB. teacherC. nurseD. dentist

问题补充：

If you have a toothache, you should go to see a.

A. policeman

B. teacher

C. nurse

D. dentist

答案：

A. policeman

B. teacher

C. nurse

(答案→)D. dentist

解析：通过 If you have a toothache“如果你牙痛”可知，应该去看牙医。所以本题应该选D。