问题描述：
That old man died ____________ the age of eighty.选项:a、on b、in c、with d、at
That old man died ____________ the age of eighty.
选项:
a、on
b、in
c、with
d、at
That old man died ____________ the age of eighty.
选项:
a、on
b、in
c、with
d、at
问题解答：
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