There is an old saying goes “Give a man a fish, and you feed him for a day. Teach a man to fish, and he can feed his belly the whole life”.
A. that
B. who
C. when
D. As
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(答案→)A. that
B. who
C. when
D. As
解析：考查从句连词的选择。根据句子结构可知，saying后面的是定语从句，从句中缺少goes的主语，可以用that或者which who只能用于指人 when用作时间状语 as意为正如