В каждом предложении нужно поставить указанный в скобках глагол в пассивный залог времени.

5) But tin the 1970s computers became smaller and cheaper. "Spacewar"
(follow) by games like "Pong" and "Space invaders".
6) Thousands of these games
(sell) all around the world
7)The early computers were very expensive, so they
(use) by many people.