问题补充：
He didn’t work hard. , he failed his exam again.
A. As a result
B. As a result of
C. In spite of
D. As a matter of fact
答案：
(答案→)A. As a result
B. As a result of
C. In spite of
D. As a matter of fact
解析：As a result结果，要单独使用；As a result of作为……的结果，后面要跟名词，代词或动名词；In spite of尽管；As a matter of fact事实上。句意：他没有努力学习，结果，他考试又失败了。所以选A。
