1) One of the eco-problem is air polution .It is caused by smoke from factories and transport. Poisonous fumes cause numerous health problems. Noise pollution from traffic, trains and airplanes hurt sleep and provoke mental problems.
2) People introduce eco-friendly transport that uses solar energy or alternative fuel. People want to make rolling and biking more popularized. Everybody must use more public transport.
Only active steps will save us from the ecological catastrophe and we all must realize it!
1) It is sleeping;
2) She is reading;
3) It is playing with a ball;
4) They are talking;
5)The boys are swimming;
6) She is riding a bike
Интаксическая роль наречий в предложении – служить определением или обстоятельством. Вопросительное наречие где, куда служит вопросом к обстоятельству места.