-What has made him in such a low mood recently?-by his father for not passing the exam.A.

问题补充：

-What has made him in such a low mood recently?

-by his father for not passing the exam.

A. Being criticized

B. Criticized

C. Having criticized

D. To criticize

答案：

(答案→)A. Being criticized

B. Criticized

C. Having criticized

D. To criticize

解析：考察动名词用法。句义：—最近什么事情让他情绪低沉？—因为没有通过考试被他的爸爸批评。根据句义可知下面的动名词短语Being criticized是用来回答what的，BCD三项都是分词短语，是不能在句中做主语的。故A正确。