she is not so healthy she used to be?
A. How it is that; as
B. Why is it that; as
C. Is it why; that
D. How is it that; what
网友回答
A. How it is that; as
(答案→)B. Why is it that; as
C. Is it why; that
D. How is it that; what
解析：考查强调句型。It is ...that...是强调句型，强调句型有一般疑问和特殊疑问形式，特殊疑问形式是“特殊疑问词+is it ...that?”。句意：她为到底什么没有以前那么健康？强调句强调的是原因，not so/as...as不如......。故选B。