【正文】 語時，其 前后都要加逗號。 His house is ____ ____ ____ mine. twice bigger than three times as as twice as as 。請比較： 她很友善，因此我們都喜歡她。 1. Playing chess is i______ , so I ’m interested in it. 2. You can add some water to the soup because it’s too s______. 3. Not all the water is c______ and safe to drink. 4. We should not w______ every drop of water. aste nteresting alty lean 1. About ________ of the human body is water. % B. 30% C. 70% 2. About ________ of the Earth is water. 80% B. 75% C. 60% 3. Most of the water in the world is ________. A. fresh water B. drinkable C. undrinkable 4. If water drips from the tap every 10 seconds, we will waste about ______ litres of water a year. A. 215 B. 315 C. 415 5. Having a shower instead of a bath can save up to ______ litres of water a week. A. 400 B. 300 C. 200 More exercise human drinkable groundwater tap shower bath Facts about water Here are some interesting facts about water: ? About 70% of the human body is water. ? Oceans cover about 75