Po prostu trzeba odmienić czasowniki i zbudować zdania według wzoru:
1. When was the world’s first postage stamp used? It was first used on the 6th of May 1840.
2. When was the first paper produced? It was produced in 105 AD in China.
3. When was the first jigsaw puzzle made? It was made in the 1760s.
4. When was the telephone invented? It was invented in 1876 in the USA by Alexander Graham Bell.
5. When was radium discovered? It was discovered in 1898 by Marie Curie.
6. When was the first petrol-driven car built? It was built in 1885 by Karl Benz and Gottlieb Daimler.
7. When was the first silicon chip produced? It was produced in 1958.
8. When was the first television programme broadcasted? It was broadcasted in 1936.
9. When was the first colour TV programme shown? It was shown in 1953.
