Everything he to his country.
A. had was contributed
B. had been contributed
C. had to be contributed
D. had contributed
网友回答
(答案→)A. had was contributed
B. had been contributed
C. had to be contributed
D. had contributed
解析：考查主语从句.句意:他所有的一切都献给了国家.everything he had为主语从句,谓语动词用单数形式.be contributed to献给,本句强调的是过去的动作,故选A.