【正文】
Unit 5 Water can live without water for a few___. you exercise, you need ___water. covers about___of the Earth. third half thirds ___of the water on Earth is fresh or without salt. % % % It runs into rivers. It rises from the sea to the sky. It runs into the sea. It falls as rain again Water falls from the clouds as rain. 1 2 3 4 5 Who do you think is talking to the girl? that tap off. turn off =switch off 關(guān)掉 turn on=switch on 打開 用法: turn that tap off=turn off that tap