Add spaces: Usepower-upsorformlongerwordstoboostscorestoprovethehypothesisthatyou'rethebestwordgameplayeraround.

Answer: Use power-ups or form longer words to boost scores to prove the hypothesis that you're the best word game player around.

Add spaces: *Theyhavenoknownmedicalconditionspredisposingtoadversereactionstoanyproductsordered

Answer: * They have no known medical conditions predisposing to adverse reactions to any products ordered

Add spaces: Itisguaranteedthatyouwillnotbeabletobookthesamecourseatalowerpriceanywhereelse.

Answer:
It is guaranteed that you will not be able to book the same course at a lower price anywhere else.