Put the verbs given in brackets in the necessary form.
1. Cashiers often (to make) mistakes doing a lot of calculations every day.
2. Punched cards (to use) by J. M. Jacquard to program his loom.
3. People greatly (to change) computers lately.
4. During the experiment the machine (to break) down and (must repair).
5. Our programmer (to write) programs for the computer all day long yesterday. 6. He (to finish) his work before 7 o’clock.
7. When the lesson (to be over), we (to switch) the computer off.
8. What idea Charles Babbage (to have)? He (to design) a fully programmable
mechanical computer.
9. We (to use) computers for three hours to solve those mathematical problems. 10. The problems (not to solve) before the necessary
algorithms (to input) into the computer.
2. Are you earning less money than you used to?
3. House prices are rising quicker and quicker.
4. We don’t seem to spend much time at our villa.
5. I enjoy watching science fiction films with my friends.
6. Why does he keep forgetting to do the shopping?
7. He said that they were waiting at the train station and they would be leaving soon.
8. He asked me if I would come to the party.
9. If I had enough money, I would buy a new computer.
10. I wish I could play the piano.