it gives me more freedom to do what i want.want后还需要加to do

这句话可以是这样,也可以是it gives me more freedom to do what i want to.
这里what 引导的是一个宾语从句
名词性从句中的省略,往往是为了避免重复.
若宾语的what从句中的谓语动词与主句的相同,则宾语从句可以省略谓语,甚至主语；
例：Someone has borrowed my dictionary, but I don’t know who (has borrowed it).
有人借走了我的词典,但我不知道是谁.
We will do what we can（do）to help you.
—Is Mr. King in his office?
—Sorry, I don’t know（whether he is in his office or not）.