IF PEOPLE USE RECYCLED MATERIALS, THEY WILL SAVE ENERGY

1. - BO DE KIEM TRA 1 TIET SO 4 MON TIENG ANH LOP 6 CHUONG TRINH MOI CO MA TRAN VA DAP AN
BO DE KIEM TRA 1 TIET SO 4 MON TIENG ANH LOP 6 CHUONG TRINH MOI CO MA TRAN VA DAP AN
1. If people use recycled materials, they will save energy