that keeps you guessing at almost every turn 
(ROOT (S (NP (DT that)) (VP (VBZ keeps) (NP (PRP you)) (S (VP (VBG guessing) (PP (IN at) (NP (ADJP (RB almost) (DT every)) (NN turn))))))))
(ROOT (S (NP (DT )) (VP (VBZ ) (NP (PRP )) (S (VP (VBG ) (PP (IN ) (NP (ADJP (RB ) (DT )) (NN ))))))))