问题补充：
the heavy snow, I can’t go to school today.
A. Because of
B. As
C. Being
D. because
答案：
(答案→)A. Because of
B. As
C. Being
D. because
解析：Because of因为，由于，后面一般接名词性短语；As由于，随着，一般接从句；Being现在分词做伴随状语，一般和句子主语是主谓关系；because因为，后面接从句。句意：由于大雪，我们今天不能上学去了。结合语境可知前文为名词性从句，故选A。
