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choose the correct answer?

the position with computer is very similar today. A few years old, computers(1) ...... very large and expensive. Business managers and rich people ordered them but they(2)........... know how to use them . In many countries , however the situation(3)............ now completepy changed . A lot of people not only own microcompurters but also know how(4)........... them

1. a. were b. are c. have been d. is

2. a. don't b. doesn't c. not d. didn't

3. a. has b. have c. had d. are

4. a. used to b. to use c. using d. used

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Trả lời (1)

  • the position with computer is very similar today. A few years old, computers(1) ...... very large and expensive. Business managers and rich people ordered them but they(2)........... know how to use them . In many countries , however the situation(3)............ now completepy changed . A lot of people not only own microcompurters but also know how(4)........... them

    1. a. were b. are c. have been d. is

    2. a. don't b. doesn't c. not d. didn't

    3. a. has b. have c. had d. are

    4. a. used to b. to use c. using d. used

      bởi nguyen tuyen 23/08/2019
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