Задание 5. Passive Voice. Перепишите предложения в пассивном залоге

Решение:

1. Penicillin was discovered by scientists in 1928.
2. This robot was designed by engineers last year.
3. Solar energy is used to power the device.
4. A new drug is being tested by researchers now.
5. The first Mars colony will be built by people in 2040.