Question

plis me ayudan hay que invertir las a oraciones de afirmativo a negativo y viseversa pofis
como seria el negativo de "The pollution is the principal cause of the environmental difficulties"
como seria el negativo de "Bicycles and horses were pollution producers"
como seria el afirmativo de "Industries weren´t controlled"
como seris el afirmativo de "People weren´t worried for the earth"

Answer 1

Respuesta:

1. The pollution isn't the principal cause of the environmental difficulties.

2. Bicycles and horses weren't pollution producers.

3. Industries were controlled

4. People were worried for the earth.

Explicación:

Espero que te haya servido :)