Câu trả lời:
Our future house will be on the ocean. It will be surrounded by tall trees and blue sea. But we only have salt water in the ocean. We need fresh water for drinking and for growing food on farms. Ocean water is too salty to drink. It is also too salty for watering plants. We must have the suggestions to make fresh water from salty water. We should be careful not to waste water.
T or F
1. F 2. T 3. T 4. T