We've seen many ..... in computer technology in our lifetime. Computers used to take up entire rooms, butnow the computers in our cell phones are more powerful than those room-sized computers used to be. (*) marathons (*) chains of events (*) breakthroughs (*) betterment
This is a companion discussion topic for the original entry at https://english.best/questions/13340,weve-seen-many-___-in-computer-technology-in-our-lifetime-computers-used-to-take-up-entire-rooms-butnow-the-computers-in-our-cell-phones-are-more-powerful-than-those-room-sized-computers-used-to-be/