the most important question about the computer is __it has done and will do to man

问题描述:

the most important question about the computer is __it has done and will do to man
为什么是what不用that

"关于电脑最主要的问题是它对人类已经做了什么和还将对人类做些什么"
从词义上讲,应该用what.
另外,done / do 是及物动词,必须要有宾语,what 作它们的宾语,
而that只是连接词,不能作宾语.