Перевести из Актив в Пассив

1. This unit performs different arithmetic operations.

2. Our personnel have checked the result of the experiment.

3. My friend was compiling a program when I came to the laboratory.

4. They did many operations on the computer.

5. Owing to the computer we could process a great deal of information.

1. different arithmetic operations are perfomed by this unit

2. The results of the experiment have been checked by our personnel

3. When I came to the laboratory a program was being compilled by my friend

4. many operations were made on the computer

5. owing to the computera great deal of information could been processed by us