He decided not to attend her birthday party he had been invited..A. even ifB. because C.

问题补充：

He decided not to attend her birthday party he had been invited..

A. even if

B. because

C. as if

D. as though

答案：

(答案→)A. even if

B. because

C. as if

D. as though

解析：这题考查连词的用法：even if即使，because 因为， as if， as though好像，句意是：他决定即使被邀请也不参加她的生日聚会。选A。