People use computers for various purposes. A. Computers are being used by31/40Mark the letter A, B, C or D to indicate the sentence that is closest in meaning to each of the following questions. People use computers for various purposes. Computers are being used by people for various purposes.Computers have been used by people for various purposes.Computers are used by people for various purposes.Computers will be used by people for various purposes.Giải thíchChọn đáp án C