Напишите следующие предложения в вопросительной и отрицательной формах: 1. You are doing that exercise correctly. 3. All the birds are flying south. 6. They are travelling in Europe at present. 29 7. Helen is taking dancing lessons at the country club. 8. Mr. Evans is writing a series of articles on the economic situation. 9. Ann is doing well in her studies at present

1. You are doing that exercise correctly. - Are you doing that exercise correctly? - You are not doing that exercise correctly.

2. All the birds are flying south. - Are all the birds flying south? - All the birds are not flying south.

3. They are travelling in Europe at present. - Are they travelling in Europe at present? - They are not travelling in Europe at present.

4. Helen is taking dancing lessons at the country club. - Is Helen taking dancing lessons at the country club? - Helen is not taking dancing lessons at the country club.

5. Mr. Evans is writing a series of articles on the economic situation. - Is Mr. Evans writing a series of articles on the economic situation? - Mr. Evans is not writing a series of articles on the economic situation.

6. Ann is doing well in her studies at present. - Is Ann doing well in her studies at present.? - Ann is not doing well in her studies at present.