II . Make the sentences negative and interrogative : 1. We bought a consignment of your products made by your plant . 2. They have got the software advertised in the " Software Magazine " . 3. They were listening to the report made by a director of their plant . 4. The collective farmers used the agricultural machines made by our fac tory . 5. They had their contracts signed . 6. We had all the questions discussed . 7. The engine repaired by him failed . 8. The article about our cooperation written by her has been published .​