Question

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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.

Answer 1

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