English, asked by htumbi01, 9 months ago

Focus on Verbs Exercise 6
Simple Past/ Present Perfect
1. Since computers were first introduced to the public in the early 1980's, technology (change)
changed a great deal. The first computers (be) were simple machines designed for basic tasks. They
(have, not) don't have much memory and they (be, not) were not very powerful. Early computers
were often quite expensive and customers often (pay) paid thousands of dollars for machines which
actually(do) did very little. Most computers (be) were separate, individual machines used mostly as
expensive typewriters or for playing games.
2. Times (change).....
www.ce Computers (become)....
machines with very practical applications. Programmers (create).....
..... a large
selection of useful programs which do everything from teaching foreign languages to bookkeeping,
We are still playing video games, but today's games (become)......................... faster, more
exciting interactive adventures. Many computer users (get, also)..
....... On the
Internet and (begin).
.......... communicating with other computer users around the
world. We (start)
...... to create international communities online. In short, the
............ into an intemational World
simple, individual machines of the past (evolve)........
Wide Web of knowledge,
S
PRE
.......... powerful
Amn
109% (-)​

Answers

Answered by agnibarsha
3

Answer:

changed

became

created

have become

have got

have begun

have started

evolved

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