Either his wife or his friends his birthday party.
A. has attended
B. have attended
C. attends
D. is attending
网友回答
A. has attended
(答案→)B. have attended
C. attends
D. is attending
解析：考查主谓一致：主语是either…or…连接的，用就近原则，这句话是和his friends一致，用复数谓语，四个选项只有B是复数谓语。句意：他的妻子和朋友都参加生日聚会。选B。