Поставьте глаголы в формы активного или пассивного залога.
1. About 200 years ago, there ... (not be) many factories or machines.
2. People ... (use) a metal which ... (call) steel to make strong chassis.
3. Some assembly operations … (perform) manually.
4. Each station … (design) to perform a specific processing operation.
5. Many applications of numerical control … (develop) since its initial use to control machine tools.
6. His work ... (finish) already.
7. The experiment ... (carry out) from ten till twelve o’clock.
8 The machine ... (test) now.
9. Watt ... (continue) his researches and ... (patent) several important inventions.

Вовчик256    3   13.04.2020 18:22    3