She doesn't know what_________ (do) and where__________ (go)这个空要怎么填,为什么这样填,求详解

问题描述:

She doesn't know what_________ (do) and where__________ (go)
这个空要怎么填,为什么这样填,求详解

to do和to go,这个是疑问代词后加不定式表目的,我不知道要去做什么以及要去哪儿.