16. He used to ... to work by bus.
a. to go b. to going c. going d. go
B/ TỰ LUẬN (6 điểm):
IV. Đọc đoạn văn và trả lời câu hỏi.(2ms)
Personal computers are used in business and professional offices and at home to reduce
paperwork. There are two important reasons for the increasing popularity of personal
computers. First, there is a great deal of software for use both in the office and at home.
Software for word processing and accounting improves office efficiency while programs for
household budgets, games, or education activities are used at home. Second, using a personal
computer is an individual activity that allows the user to control and interact with the computer.
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