Объедините два предложения в одно, используя придаточные местоимения/наречия. I wanted to see the manager. The manager was busy
We went to the party last night. The party wasn’t very enjoyable.
I met this man. It happened several times.
I travelled to Spain by plane. It was unforgettable.
He lost the computer file. It was important for him.
She has put her glasses somewhere. She doesn’t remember.
Mark gave me a promise. He forgot about it.
The student put a comma. It was unnecessary.
The old couple was watching the photos. The photos had been taken 20 years back.
This is someone’s car. I don’t know.

1)Westminster Abbey, formally titled the Collegiate Church of St Peter at Westminster, is a large, mainly Gothic, church in the City of Westminster, London, located just to the west of the Palace of Westminster. It is one of the most notable religious buildings in the United Kingdom and has been the traditional place of coronation and burial site for English and, later, British monarchs. The abbey is a Royal Peculiar and between 1540 and 1550 had the status of a cathedral; however, the church is no longer an abbey nor cathedral.
2)Tower of London - one of the main symbols of the United Kingdom, occupies a special place in the history of the English nation. 
Tower, a fortress, standing on the north bank of the Thames - the historic center of London and one of the oldest buildings in England. As the Duke of Edinburgh wrote in his book on the 900th anniversary of the Tower, "in its history, the Tower of London was a fortress, palace, royal jewelry store, arsenal, mint, prison, an observatory, a zoo, a place attracting tourists."
3)Population - 8.3 million people ( 2012 ) , the second largest city in Europe and the largest in the EU. Forms agglomeration " Greater London " and broader metropolitan- . Located in the south- east of the island Great Britain , on the plain of the London Basin, Thames Estuary, near the North Sea.
Main political, economic and cultural center of the United Kingdom. The city's economy is the fifth part of the economy . Refers to the global cities of the highest rank , the world's leading financial centers .
The historic center , formed in Westminster and the City , has developed in the Victorian era . Among the individual buildings that survived the fire in 1666 , - a medieval fortress tower .
Founded about 43 years under the name Londinium by the Romans soon after their invasion of Britain . In I-III centuries - the capital of Roman Britain , with the XI-XII centuries - England, since 1707 - the UK, from the XVI to XX century - the British Empire. From 1825 to 1925, was the largest city in the world .
А про The Houses of Parliament не знаю.

 the earth.We live on the Earth. It is very,very big. There is a lot of water on the Earth.It is in rivers, seas and oceans. There are a lof of forest, fields mountains on it. Different animals live o0n the Earth. Different plants grow on it. The Earth is beautiful. There are large countries and small countries. There are warm countries and cold countris. In some countres there are four seasons in a year and in some countries there are two.  People live in different countries.  They speak different languages. Our country is not big. There are a lot of short rivers,large forests, fields and mountains in our country.