His whole school education only 2 years because of his illness.
A. added up
B. added up in
C. added up to
D. was added up
网友回答
A. added up
B. added up in
(答案→)C. added up to
D. was added up
解析：动词短语辨析。A加起来；C共计达…;没有BD这两个结构；句意：因为生病，他整个的学校教育共计也只有2年。根据句意说明C正确。