Though the girl had been suffering from the blood disease, she acted as if nothing to her while facing her friends and relation.
A. happened
B. would happen
C. was happened
D. had happened
网友回答
A. happened
B. would happen
C. was happened
(答案→)D. had happened
解析：通过分析句子结构，可知as if引导了一个方式状语从句，表示与过去的事实相反，状语从句中要用过去完成时。