1) a) Nobody knows when this fact was discovered.
b) Christopher Columbus disocvered America in 1492.
2) a) 'Battle of the Books' was written by him too.
b) Jonathan Swift wrote 'Gulliver's Travels' in the eighteenth century.
c) Who built the Tretyakov Gallery in Moscow?
3) a) A lot of strange animals were painted on the wall. We couldn't see all of them.
b) Mr Woodriff painted very good portraits when he was younger.
4) a) Mrs Pitkin didn't show me her garden when I came to visit her.
b) The small island is not shown on the map.
5) a) It was built to make the telephone and television system of the British capital better.
b) The Post Office Tower in London was built in 1964.
2) Her husband has got a new tape-recorder.
3) My grandmother has got ten apple-trees in the garden.
4) Joy has got two children.
5) You have got six stars.
6) The pupils have got nice rulers.
7) I have got a grey toy dolphin.
8) His sister has got a toy piano.
9) We have got three little taddles.