Write meaningful sentences using conditional sentences type 1

Write meaningful sentences using conditional sentences type 1.don't use contractions:
1. If/people/plant/more trees,/they/save/environment
2. If/environment/green/clean,/human life/better
3. If/we/use/more/motorbike/car,/air pollution/rise
4. If/air pollution/not descrease,/people/get/some/breathing problems
5. If/there/not/rubbish bin/in each classroom,/it/not/cleaner