Our future house will be on the ocean. It will be surrounded by tall trees and blue sea. But we only have saltwater in the ocean. We need fresh water for (drink/ drinking/ to drink/ to drinking) and for growing food (in/ on/ at/ into) farms. Ocean water is too salty (drink/ drinking/ to drink/ to drinking). It is also too salty for watering plants. We must have the (things/ suggestions/ ways/ ideas) to make freshwater from salty water. We should be (careful/ careless/ carefully/ carelessly) not to wastewater. Questions: 1. Where will your house be? ........................................................................................... 2. What will it be surrounded? …………………………………………………………. 3. Is ocean water salty? …………………………………………………………………..

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