You are wet through . You ____ in the rain .
A . must come B . must be caught C . must have caught D . must have got caught
You are wet through . You ____ in the rain .
A . must come B . must be caught C . must have caught D . must have got caught
D。
“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。