Заполните пропуски модальными глаголами либо их эквивалентами(can, must, are to, should,

Заполните пропуски модальными глаголами или их эквивалентами
(can, must, are to, should, had to, may, could):
1. It is he who decide where and what sound effects and music be used.
2. The director be certain that each shot smoothly joins the previous one.
13
3. you imagine life without films or television cinema's little sister?
4. Only one person watch a kinetoscope at a time.
5. Chaplins mother walk off the stage.
6. Electronic systems include automatic controls for exposure, focusing,
flash, film winding, and film rewinding.