To our great his parents were at his mark. A. surprise; surprisedB. surprises; surprisin

问题补充：

To our great , his parents were at his mark.

A. surprise; surprised

B. surprises; surprising

C. surprises; surprised

D. surprise; surprising

答案：

(答案→)A. surprise; surprised

B. surprises; surprising

C. surprises; surprised

D. surprise; surprising

解析： 形容词后一般修饰名词，surprise作名词时，为不可数名词。be surprised 主语是人，be surprising主语是物，故选A。