Travelling to the future

3. - A large piece of cloth on a boat used to catch the wind
6. - Vehicles like buses, cars, and trains that carry people or goods
7. - Cheap to run; helping you to save money
8. - Dangerous and bad-smelling smoke from cars or factories
10. - A small electric vehicle with only one wheel that you stand on
11. - A tiny electric vehicle that is the size of a laptop
14. - To make a journey from one place to another
17. - Easy, quick, and useful for your daily life
18. - To push down with your feet to make a bicycle move
19. - Using energy and light from the sun to run
22. - A sci-fi machine that moves people from one place to another instantly
23. - Doraemon's famous flying toy that you put on your head

1. - The state of the environment being dirty and damaged by waste
2. - To make the air, water, or land dirty and unsafe
4. - Making you feel relaxed and nice when you sit in it
5. - A very fast train in Japan that looks like a bullet
9. - A modern car that runs on electricity instead of petrol
12. - The special job or natural purpose that something does
13. - A large round object in space that moves around the sun, like Earth
15. - The long metal tracks that trains run on
16. - A future transport system that carries passengers in tubes at super high speeds
20. - A function that allows a car or plane to drive by itself automatically
21. - A type of train that runs on tracks high above the ground