It is hard to believe that no one (23) __________ computers a few years ago. I wonder how people lived. There must have been a lot of paperwork. I cannot imagine writing everything (24) ____________. I also wonder how everything worked (25) __________ computers. We need computers today for everything. I am sure I would be ten times busier than now if I didn't have a computer. Imagining having to find a piece of paper and an envelope and (26) ___________ down the street to mail a letter! I love my computer. It makes everything in my life so (27) ___________.

Read the following passage and write the letter A, B, C or D on your answer sheet to indicate the correct word that best fits each of the numbered blanks from 23 to 27.

It is hard to believe that no one (23) __________ computers a few years ago.