The earthquake and the heavy losses contributed to disabled this family to afford his education.
A. that
B. it
C. what
D. which
网友回答
A. that
(答案→)B. it
C. what
D. which
解析：考查定语从句。the heavy losses 是先行词， contributed to是定语从句，that作to的宾语，省略了，从句缺少主语，指代The earthquake用it。故选B。