Bill always seems so self-confident, but he’s extremely shy.
A. in vain
B. in contrast
C. in reality
D. in surprise
网友回答
A. in vain
B. in contrast
(答案→)C. in reality
D. in surprise
解析：本句的意思是“Bill总是看上去很自信，但其实他很害羞。”因此选C。in vain“徒然地”；in contrast to“与……相比”；in surprise“惊奇地”。