Venice(威尼斯)is a famous city in the world. Every year thousands of people from all over the world   (1)   to Italy to visit the city. Do you know why they like to go there for a   (2)  ?

   Venice is a very beautiful city. It is quite different   (3)   other cities in the world. There aren't any roads   (4)   streets in the city. so there aren't any cars or buses. There are many canals(运河) in the city. There is one big canal and one hundred and seventy-seven   (5)   canals. People move up and down the canals in   (6)   to go to work, go shopping or visit their friends.

   But Venice is going down and the   (7)   is going up. In 2040 Venice will be under water. The Venetians(威尼斯人)love their city and want to   (8)   there. So they want to save Venice from the sea. How can they save Venice? They can _  (9)   some strong huge walls and gates in the sea. The gates will close to keep too much water   (10)  _. In this way Venice will not sink.