The problem was that it is valuable everyday use.
A. too; to
B. too; for
C. too; of
D. so; that
网友回答
A. too; to
(答案→)B. too; for
C. too; of
D. so; that
解析：考查固定句型。so...that...“如此......以至于......”，that后跟句子，这里不是一个完整的句子，排除D项；too... to...是“太......而不能......”的意思，to后加动词原形；It is +形容词 for sth./for sb. to do sth.是固定句型，意为“对于某物或某人来说，做某事......”。故选B。