Mr. Li, who his whole life to education, is retiring next month.
A. devoted
B. is devoting
C. has devoted
D. had devoted
网友回答
A. devoted
B. is devoting
(答案→)C. has devoted
D. had devoted
解析：句意：把一生都花在了教育事业的李先生，下个月将退休。根据句意可知他把一生都致力于教育事业是过去所发生的事情，持续到了现在。故使用现在完成时。故C正确。