(2013·辽宁五校联合体第一次考试)What impresses me most is he appears in front of others, he wears a sincere and charming smile.
A. what
B. which
C. that where
D. that whenever
网友回答
A. what
B. which
C. that where
(答案→)D. that whenever
解析：选D 考查名词性从句。分析句子结构可知，“ he appears ... smile”为表语从句，其中包含一个时间状语从句，表示“无论他什么时候出现在别人面前”，故空处填that whenever。