问题补充：
They think wolves are dangerous humans so this leads the danger of wolves.
A. for; to
B. as; for
C. to; to
D. at; in
答案：
A. for; to
B. as; for
(答案→)C. to; to
D. at; in
解析：句意：他们认为狼对于人类是危险的，所以这导致了狼处境的危险。be dangerous to sb意为“对某人是危险的”，lead to意为“导致”，故选C。
