. If a teacher gives a student hearty smile the student will treat the teacher as agony

问题补充：

. If a teacher gives a student hearty smile, the student will treat the teacher as agony aunt.

A. The; the

B. 不填; an

C. 不填; the

D. a; an

答案：

A. The; the

B. 不填; an

C. 不填; the

(答案→)D. a; an

解析： give sb a ...smile “给人一个...的微笑” an agony aunt 一个知心姐姐/阿姨