___makes men different from the other animals is that they can think an speak.应填that,what,all
问题描述：
___makes men different from the other animals is that they can think an speak.应填that,what,all
还是the thing
答
填的是what,=名词、代词+that考：what引导的主语从句,例句中what从句作整个句子的主语.故后面的动词为is填all 和the things 少了作主语的关系代词（that）,我们知道定语从句中,做主语的关系代词是不能省略的,只有作...