Change active into passive:
1. Mothers should teach children not to throw litter in the streets.
2. Consumers could buy returnable recipients instead of throw away ones.
3. In developed countries people are recycling glass, paper, metal and even plastic.
4. In underdeveloped countries everyone wastes and throws away useful objects.
5. Everybody have to pass their bottles on others when they no longer use them.
1). Children should be taught not to litter in the streets by mothers.
2). Returnable recipients could be bought instead of throw away ones by consumers.
3). Glass, paper, metal and even plastic are recycled in developed countries.
4). Useful objects are wasted and thrown away in underdeveloped countries.
5). Bottles have to be passed on others when they're no longer used.