Ann was angry at __________ at h

Ann was angry at __________ at her.
A、his laughing
B、him laugh
C、him laughed
D、him being laughed
【正确答案】：A
【题目解析】：be angry at sth 对某事生气；laughing 此处为名词，笑声句意为：安因他嘲笑她而生气。