Parts of Speech for Rack one's brains
Gramatical Hierarchy
Grammatically "Rack One's Brains" is a noun. But also it is used as a verb.
All about rack one's brains Download all about rack one's brains in pdfGrammatically "Rack One's Brains" is a noun. But also it is used as a verb.
All about rack one's brains Download all about rack one's brains in pdf