只用that不用which

1.先行词是不定代词

首选all that,再选all，最后选all all

2.先行词被序数词或形容词最高级所修饰

3.先行词被only/every/just所修饰

4.先行词既有人又有物

5.先行词是what/which/who时

those who选项就是答案