17 "Surely you are not thinking of refusing? 
( 17 ( `` ( Surely ( you ( ( ( are not ) ( thinking ( of refusing ) ) ) ? ) ) ) ) )
(ROOT (S (NP (CD 17)) (`` ``) (ADVP (RB Surely)) (NP (PRP you)) (VP (VBP are) (RB not) (VP (VBG thinking) (PP (IN of) (S (VP (VBG refusing)))))) (. ?)))
You should pass up the opportunity.
( You ( ( should ( ( pass up ) ( the opportunity ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (MD should) (VP (VB pass) (PRT (RP up)) (NP (DT the) (NN opportunity)))) (. .)))