Supply the correct form of the verb in brackets

I. Supply the correct form of the verb in brackets.

Hardly a week goes by without some advance in technology that …1… (seem) incredible 50 years ago. Over the past 20 years computers …2… (completely revolutionize) our lives. Yet we can expect the rate of change …3… (accelerate) rather than …4… (slow) down within our lifetimes. The next 25 years …5… (see) as many changes as …6… (witness) in the past 150 yeas. These developments in technology are bound …7… (have), a dramatic effect on the future of work. By 2010, new, technology …8… (revolutionize) communications. People …9… (transmit) messages down the telephone lines that previously …10… (send) by postal. A postal system which …11… (essentially be) the same since the Pharoahs …12… (virtually disappear) overnight. Once these changes …13… (introduce), not only postmen but also clerks and secretaries will vanish in a paper- free society. All the routine tasks they perform …14… (carry) on a tiny silicon chip. As soon as this technology is available, these people will be as obsolete as the horse, and cart after the invention of the motor car. One change …15… (make) thousands if not millions, redundant.