The solution this problem is acceptable. So I am it.
A. of; against
B. to; for
C. to; on
D. on; for
网友回答
A. of; against
(答案→)B. to; for
C. to; on
D. on; for
解析：考查介词。The solution to this problem.问题的解决方法.类似的还有：the key to the door, the answer to the question等。for 在此是“支持”的意思。Against”反对”之意句意：这个问题的解决方法可行，因此我支持它。