Tolong dijawab semuanya dengan menggunakan Simple Present atau Present Perfect Tense.

Kategori : Bahasa Inggris - Simple Past vs Present Perfect tense
kelas : SMA

pembahasan:
penggunaan simple past adalah untuk kejadian di waktu lampau dan sudah selesai. sedangkan present perfect adalah untuk kejadian di waktu lampau tetapi belum diketahui kapan selesainya. untuk simple past menggunakan v2, sedangkan present perfect menggunakan have/has v3.

jawaban:
Since computers were first introduced to the public in the early 1980's, technology HAS CHANGED a great deal. The first computers WERE simple machines designed for basic tasks. They DID NOT HAVE much memory and they WERE NOT very powerful. Early computers were often often quite expensive and customers PAID thousands of dollars for machines which usually DID very little. Most computers WERE separate, individual machines used mostly as expensive typewriters or for playing games or used in central servers as host of websites.

Time HAVE CHANGED. Computers HAVE BECOME powerful machines with very practical applications. Programmers HAVE CREATED 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 faster, more exciting interactive adventures. Many computer users also HAVE ALSO GOTTEN on the Internet and HAVE BEGUN communicating with other computer users around the world. We HAVE STARTED to create international communities online. In short, the simple, individual machines of the past HAVE EVOLVED into an international World Wide Web of knowledge.