1)down 2)make 3) will have 4)is leaving 5) won't drop 6) as soon as space probes, built, delivered, space journeys, space station, shuttle ТЕКСТ Nowadays travelling even to Earth’s closest neighbour planet Mars, let alone the planets in other /solar systems/, is still impractical. A trip to Mars and back would take more than a year. The /equipment/, supplies and fuel for such a trip would /require/ a vast rocket to launch a spacecraft from Earth. A return trip to the outer planets would take a lifetime. For the time being, /scientific research/ remain the best way of exploring distant worlds. Work is under way on a new international /shuttle/, which will be a base for a /space station/ . It is a modular structure, being built in space module-by-module, with sections being /delivered/ into orbit by the /space probes/ and unmanned launch vehicles. In the future, space stations such as this, or permanent bases on the Moon, could be a starting point for /space journeys/. Spacecraft would be /built/ and launched from there rather than from Earth.
We used to live in London years ago.
I didn't like London but I have already got used to living in London now.
Would you go cycling when you were five?
Tourists would not come here years ago.
I am used to hearing about the fantastic things he does. That's no suprise.
I have benn living in China for years. At first I didn't like the food but now i have already got used to eating their strange delicacies.
Years ago we used to see her a lot because she liven near us.
I am used to wearing glasses now but it took me a long time because i found it very uncomfortable.
When I was young, i used to visit my grandmother every summer.
While studying at the university, I used to go swimming twice a week.