Correct the sentences. The mistakes are underlined. 1 Most water in the world is fresh water and we ean drink it. Most water in the world is salt water and we can't drink it. 2 Most fresh water is in lakes and rivers and it's easy to use. 3 You should wash dishes by hand because it wastes water. 4 You should empty the washing machine before you turn it off. 5 You should turn on the tap after you brush your teeth.