Miscellaneous errors

Correct the ONE error in each sentence

1. They have already a website.
2. Danone is the first food group in France.
3. They invest in new technologies as mobile internet access.
4. Economics is about offer and request.
5. We plan to run our campaign in all the medias.
6. I know quite well this company.
7. The Head Office takes place in the centre of Paris.
8. I found a job into a factory.
9. This is where are manufactured all the products.
10. They assist companies in realizing events.
11. Everyone knows this company. Its name is synonymous with the product.
12. They proposed a discount of 2.75%.