4)clear litter away — уберите отходы
3)drop litter — бросать (оставлять) мусор
2)give it a try — попробовать, попытаться
5)recycling centre — центр утилизации
1)sea pollution — загрязнение озера
I asked them to clean up after yourself waste Very cultural not to throw garbage . You need taste to do it, I know you will . In our strane a lot of recycling centers. We should not allow the pollution of lake Baikal .