Question

Complete the article by using the correct form of the verb in parenthesis, use simple past or present perfect. (15 points) Since computers were first introduced in the early 1980's, technology ___________ ____________ (change) a great deal. The first computers ______________________ (be) simple machines designed for basic tasks. They _________ not (have) much memory and they ____________not (be) very powerful. Early computers were often quite expensive and customers often ___________________ (pay) thousands of dollars for machines which ___________________ (do) very little. Most computers ___________________ (be) separate, individual machines used mostly as expensive typewriters or for playing games. Times _________ ________________ (change). Computers ____________ ________________ (become) powerful 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 ____________also ___________ (get) on the Internet and _______ ______________ (begin) communicating with other computer users around the world. We ________ ________________ (start) to create international communities online. In short, the simple, individual machines of the past ________ _________________ (evolve) into an international World Wide Web of knowledge. ayuda me urge lo tengo que entregar ahorita

Answer 1

En el desarrollo de esta actividad, se completa el artículo usando el correcto tiempo verbal:

Simple past or present perfect

• Complete the article by using the correct form of the verb in parenthesis, use simple past or present perfect.

Since computers were first introduced in the early 1980's, technology Has changed (change) a great deal. The first computers were (be) simple machines designed for basic tasks. They didn't have (have) much memory and they were not (be) very powerful. Early computers were often quite expensive and customers often paid (pay) thousands of dollars for machines which did (do) very little. Most computers were (be) separate, individual machines used mostly as expensive typewriters or for playing games. Times have changed (change). Computers have become (become) powerful machines with very practical applications. Programmers have created (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 have become (become) faster, more exciting interactive adventures. Many computer users have also gotten (get) on the Internet and have begun (begin) communicating with other computer users around the world. We have started (start) to create international communities online. In short, the simple, individual machines of the past have evolved  (evolve) into an international World Wide Web of knowledge.

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