Из активного в пассивный залог или наоборот
1) A contract for the delivery of this equipment wa signed by the 2 firms
2) The 2 firms are to establish business contracts
3) People imported various raw material
4) They will take the customers to the plant
5) As a result the experience of work is accumulated
6) The orders for computers are given every month
7) Contracts for the delivery of pumps are signed
8) They establish business contracts

1. The two firms signed a contract for the delivery of this equipment. (active)2. Business contracts are to be established by the two firms. (passive)3. Various raw materials were imported. (passive)4.  The customers will be taken to the plant. (passive)5. As a result they accumulate the experience of work. (active)6. They give orders for computers every month. (active)7. The firms sign contracts for the delivery of pumps. (active)8. Business contracts are established. (passive)