сделайте готовые только предложения!✅✅✅✅​

1) a) Cristopher Columbus discovered America in 1492.

   b) Nobody knows when this fact was discovered.

2) a) The Post Office Tower in London was built in 1994.

   b) It is built to make the telephone and television systems of the British capital better.

   c) Who built the Tretyakov Gallery in Moscow?

3) a) The small island isn't shown on the map.

   b) Mrs Pitkin didn't show me her garden when I came to visit her.

4) a) Mr Woodriff painted very good portraits when I came to visit her.

   b) A lot of strange animals are painted on the wall.

5) a) Jonathan Swift wrote "Gulliver's Travels" in the 18th century.

   b) "Battle of the Books" was written by him too.