Some people think the government should be responsible for solving the pollution poblems which result from heavy traffic. To what extent do you agree?
Many manufactured food and drink products contain high levels of sugar, which causes many health poblems. Sugary products should be made more expense to encourage people to consume less sugar. Do you agree or disagree?
lack of fresh water is becoming a global issue of increasing importance. What problems does this shortage caouse? what measures could be taken to overcome these poblems?