lenkagaminetv 3/15/2025 6:15:21 AM

Bài 15: Complete the text with the correct form of the verbs (Past Simple or Present Perfect Simple)

Since computers were first introduced to the public in the early 1980's, technology__________

(1 .change) a great deal. The first computers_________ (2.be) simple machines designed for basic tasks. They __________ (3.have, not) much memory and they __________ (4.be, not) very powerful. Early computers were often quite expensive and customers often_________ (5.pay) thousands of dollars for machines which actually__________(6.do) very little. Most computers__________ (7. be) separate, individual machines used mostly as expensive typewriters or for playing games.

Times__________ (8. change). Computers___________(9.become) powerful machines with very practical applications. Programmers ___________(10.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__________ (11.become) faster, more exciting interactive adventures. Many computer users__________ (12.get, also) on the Internet and have begun communicating with other computer users around the world.

Unit 5 - (HS)