Вставьте предлоги (for,without,on,of about,before) в предложения: what do we when we use the words"the world around us"? we see us many things such as large lands and mountains,woods and rivers. we know that there are many seas, lakes and earth. water is a life on the earth. all living beings are not able to water. many rivers and lakes are polluted and cannot be . заранее !