A. footprint B. appliance C. after-class D. elderly A. command B. sneaker C. cube D. mind reader A. pedal B. Cuba C. several D. lecture A. by taxi B. surface C. clear D. talk to A. vary B. toe C. promptly D. meal A. industry B. blank C. worth D. operation A. speak to B. propulsion C. creature D. backstage A. contribute B. howl C. doormat D. vanished A. spacious B. traditionally C. over-zealously D. on the way out A. librarian B. tourist C. die for D. react