Do not let any failures discourage you，for you can never tell close you may be to victory. (2013·湖南，28)
A. how
B. that
C. which
D. where
网友回答
A. how
B. that
C. which
D. where
解析：A
解析 考查宾语从句引导词的辨析。句意为：不要让任何的失败阻碍你，因为你永远不知道成功离你有多近。分析句子成分后可知，tell后接的是宾语从句；根据语境可知此处用副词how修饰形容词close。