You are wet through . You in the rain .
A. must e
B. must be caught
C. must have caught
D. must have got caught
网友回答
A. must e
B. must be caught
C. must have caught
(答案→)D. must have got caught
解析：“must +不定式的完成式”表示对过去发生行为的肯定推测，只用于肯定句。句4中，be / get caught in a rain 为一个固定搭配。