问题
选择题
We should learn from those _____ are always ready to help others.
A．who
B．whom
C．they
D．that
答案
答案：A
题目分析：考查从句，从句are always ready to help others缺少主语，所以用who，whom只作宾语，所以选A
点评：做从句题时，首先看从句是否缺少成份，如果缺少就在关系代词里找引导词；如果不缺少成份，就在关系副词里选择引导词