— Do you know David?— Yes I met at your party.A. heB. himC. hisD. them

问题补充：

— Do you know David?

— Yes, I met at your party.

A. he

B. him

C. his

D. them

答案：

A. he

(答案→)B. him

C. his

D. them

解析：问句中的David是一个人，单数形式，故排除D。meet为及物动词，后面接宾语，人称代词用宾格形式，“他”的宾格为him。故选B.句意：你认识大卫吗？是的，我在你的聚会上遇见他了。