Ответ:

1. He doesn't study on-line advertising in Oxford.

Does he study on-line advertising in Oxford?

2. Elizabeth 2 doesn't like her horses very much.

Does Elizabeth 2 like her horses very much?

3. We don't publish different writes in our company.

Do we publish different writes in our company?

4. Mary doesn't want to buy all the products.

Does Mary want to buy all the products?

5. The Professor doesn't speak four languages.

Does the Professor speak four languages?

6. Tom and Angela don't live together in a new house.

Do Tom and Angela live together in a new house?

7. Our company doesn't help to promote goods and services.

Does our company help to promote goods and services?