we are _____ to learn that he has changed a lot .

问题描述:

we are _____ to learn that he has changed a lot .
A.surprise B.surprised C.surprising D.to surprise

B
surprised 形容词,意思是“感到惊讶的”.
常用结构:be surprised at sth 对某事感到惊讶
be surprised to do sth 做某事而感到惊讶