The first films with sound were called "____(1)____". When sound was added to film in 1927, _____(2)_____.a.(1) talkies; (2) many film stars could no longer act because their voices were not well-suited for filmb.(1) moving pictures; (2) other innovative techniques immediately began to be used, including the 180 degree rule, panning shots, and fadesc.(1) projections; (2) many directors were forced to hire writers to create storylines based on old silent filmsd.(1) stills; (2) Hollywood was established as the popular place to direct and produce modern films