studiesshowthattheelectricdevicespeoplehavemadeuseofmusicmaybecausinghearingloss
studiesshowthattheelectricdevicespeoplehavemadeuseofmusicmaybecausinghearinglossinmanypeopel
1enjoy2enjoying3toenjoy4enjoyed
()onastudyofconsumerspendingtheirmarkingstrategyworksoutwell
1basing2beingbased3based4tobebased