điền giới từ : 1. you can buy reusable shopping bags ......... the check-out 2. the three Rs stand .......... Reduce , reuse and recycle 3. these shopping bags made are made .......natural materials 4. don't throw old things ....Try to find another use for them 5.you should turn the tap ....when you brush tour teeth 6.you shouldm't wrap the food ... a plastic bag 7.give your old clothes ....chairty 8.you should swap your clothes ...your friends or cousins Nhanh là 1 lợi thế nha