Complete the sentences with by or on.
It's cheaper_by_bus.
1 A return ticket on the train is £15.20.
2 Paris is two hours from here by plane.
3. It's about twenty minutes to the shops
on car.
4 How much is a single ticket __ the
coach?
5 It's more dangerous on foot than car.
6 The park is an hour from here foot.
7 Maria is the plane now.
8 I really hate travelling train.​

he Hanging Gardens of Babylon were considered to be one of the Seven Wonders of the Ancient World, and the only one of the Wonders that may have been purely legendary. They were purportedly built in the ancient city-state of Babylon, near present-day Al Hillah, Babil province, in Iraq. The Hanging Gardens were not the only World Wonder in Babylon; the city walls and obelisk attributed to Queen Semiramis were also featured in ancient lists of Wonders.[1]

The gardens were attributed to the Neo-Babylonian king Nebuchadnezzar II, who ruled between 605 and 562 BC. He is reported to have constructed the gardens to please his homesick wife, Amytis of Media, who longed for the plants of her homeland.[2] The gardens were said to have been destroyed by several earthquakes after the 2nd century BC.[citation needed]

The Hanging Gardens of Babylon are documented by ancient Greek and Romans writers, including Strabo, Diodorus Siculus, and Quintus Curtius Rufus. However, no cuneiform texts describing the Hanging Gardens are extant, and no definitive archaeological evidence concerning their whereabouts have been found.[3][4]

Ancient writers describe the possible use of something similar to an Archimedes screw as a process of irrigating the terraced gardens.[5] Estimates based on descriptions of the gardens in ancient sources say the Hanging Gardens would have required a minimum amount of 8,200 gallons of water per day.[6]Nebuchadnezzar II is also reported to have used massive slabs of stone, a technique not otherwise attested in Babylon, to prevent the water from eroding the ground

1. He crossed the street and entered the cafe
2. She was walking about the room.
3. They sailed across the southern seas. 
4. Walk along this path across the field and through the wood, and in two or three hours you will come to a river. 
5. They were walking about the town from sunrise till sunset, talked to many people, looked at splendid palaces and monuments. In the evening they returned to the hotel tired but pleased.
6. Tom Sawyer jumped over the fence and ran along the street. In a few seconds he turned the corner and disappeared.
7. Walk along this corridor, turn the corner at the end of the corridor and go into the first room.
8. In five minutes everybody was sitting at the table and listening to their grandmother. 
9. He looked at the boats sailing down the river. 
10. Last year we travelled about Europe. 
11. He was walking along the street and looking at the faces of the passersby. 
12. The dog ran to the river, jumped into the water, swam across the river and ran into the woods.