Fred’s grandfather three years ago. He for three years.
A. died; died
B. was dead; died
C. died; has been dead
D. died; has died
网友回答
A. died; died
B. was dead; died
(答案→)C. died; has been dead
D. died; has died
解析：die是非延续性动词，不能和段时间状语连用；be dead 表示状态，可以和段时间状语连用。