问题补充：
I shall never forget those years I lived on the farm with
the farmers, has a great effect on my life.
A. when; who
B. that; which
C. which; that
D. when; which
答案：
A. when; who
B. that; which
C. which; that
(答案→)D. when; which
解析：years是表示时间的名词,用when引导定语从句,是因为when在从句中作时间状语.第二个空选用which,引导一个非限制性定语从句.
