Unit one, team teenage. Teenager. teenager . vali vallet volunteer . volunteer . debate . debate . fer . prefer prefer . to . prefer to content, content . movement. movement Greenhouse, Greenhouse . clean up . cleanup . suitable suitable, suitable for. suitable for . actually. actually . chAllenge. chAllenge . tidal . title topic, topic freshman, freshman confusing, confusing. confused. confused. confused. confused . fluent. fluent. graduate, graduate. graduate, graduate. recommend. recommend. sign up, sign up for something. sign up, sign up for something . advanced . adv advance. advance. Literature. literature. extra, curricular . extra, Richard lar. extra. extra. obviously. obviously. quit, quit, quit. quit, quit, quit. Responsible . response. responsibility. responsibility. be response for. be responsible for . solution. solution. schedule, schedule. schedule, schedule. dator editor, plate. plate. adventure. adventure. youth. youth . survival. survival . expert. expert behavior, behavior. generation. generation. attract. attract. be attracted to. be attracted to. focus. focus. focus on. focus on addicted, addicted. adapted . addict. addicted, too . addicted to . adult. adult. chicago. chicago. so . 45。