Won't you join us in our efforts by continuing your support in 1999?
( ( ( ( Wo n't ) you ) ( ( ( join us ) ( in ( our efforts ) ) ) ( by ( ( continuing ( your support ) ) ( in 1999 ) ) ) ) ) ? )
(ROOT (SQ (MD Wo) (RB n't) (NP (PRP you)) (VP (VB join) (NP (PRP us)) (PP (IN in) (NP (PRP$ our) (NNS efforts))) (PP (IN by) (S (VP (VBG continuing) (NP (PRP$ your) (NN support)) (PP (IN in) (NP (CD 1999))))))) (. ?)))
You should join and keep supporting us in 1999.
( You ( ( should ( ( join and ) ( keep ( ( supporting us ) ( in 1999 ) ) ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (MD should) (VP (VP (VB join)) (CC and) (VP (VB keep) (S (VP (VBG supporting) (NP (PRP us)) (PP (IN in) (NP (CD 1999)))))))) (. .)))