Much to my , most of the people to the party were old friends.
A. astonishing; inviting
B. astonished; invitied
C. astonishment; inviting
D. astonishment; invited
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A. astonishing; inviting
B. astonished; invitied
C. astonishment; inviting
(答案→)D. astonishment; invited
解析： 考查短语：to one’s astonishment 使某人惊讶的是，invited修饰most of the people作后置定语，句意：非常使我惊讶的是，大部分被邀请参加聚会的人是老朋友。故选D。