keep the viewer wide-awake all the way through . 
(ROOT (S (VP (VB keep) (NP (DT the) (NN viewer)) (S (ADJP (RB wide) (HYPH -) (JJ awake))) (ADVP (NP (PDT all) (DT the) (NN way)) (IN through))) (. .)))
(ROOT (S (VP (VB ) (NP (DT ) (NN )) (S (ADJP (RB ) (HYPH ) (JJ ))) (ADVP (NP (PDT ) (DT ) (NN )) (IN ))) (. )))