MILK BOTTLES SHOULD BE…………..AFTER BEING USED.MILK BOTTLES SHOULD B...

2. - BAI KIEM TRA SO 1 2 KI 2 2. - BAI KIEM TRA SO 1 2 KI 2
BAI KIEM TRA SO 1 2 KI 2
2.Milk bottles should be…………..after being used. a.recycled b.broken c.thrown away d.refill