Question

They believe that air pollution cause some health problems for people in the city. - It...... - Air pollution...

Answer 1

They believe that air pollution cause some health problems for people in the city.

- It....is believed that air pollution cause some health problems for people in the city..

- Air pollution.is believed to cause some health problems for people in the city..

Answer 2

They believe that air pollution cause some health problems for people in the city.

- It is believed that air pollution cause some health problems for people in the city.

- Air pollution is believed to cause some health problems for people in the city.