Relative clause:
1) Astronomy is one of the world oldest sciences. It is the study of planets and stars.
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2) The vegetables are grown without chemicals. They are sold in supermarkets.
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3) People have marched to London. They are protesting against pollution.
➞
4) The police never found the money. It was stolen in the robbery.
➞
5) There was a big red car. It had been parked outside the house.
➞
6) Libya is a leading producer of oil. It is a country in North Africa.
➞
7) A chemical company has been bankrupt. It employed 4000 people.
➞
8) A new drug may gives us eternal youth. It was developed by a British university.
➞
9) A new motorway is planned. It will cost 500 million pound.
➞
10) Some weapons belong to the IRA. They are found at a flat in Bristol.
➞
11) John Quincy Adams was born on July 11, 1767. He was the sixth president of the United States.
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12) There were some children. They were swimming in the river.
➞
13) Tennis fans have been queuing all night at Wimbledon. They hope to buy tickets.
➞
14) Some paintings haven't been found yet. They were stolen from the museum.
➞
15) Two languages, Finnish and Swedish, are used in Helsinki. It is the capital of Finland.
➞
Relative clause:
1) Astronomy is one of the world oldest sciences. It is the study of planets and stars.
➞ Astronomy which is the study of planets and stars is one of the world oldest sciences
2) The vegetables are grown without chemicals. They are sold in supermarkets.
➞ the vegetables which are sold in supermarkets are grown without chemicals
3) People have marched to London. They are protesting against pollution.
➞ people who are protesting against pollution have marched to London
4) The police never found the money. It was stolen in the robbery.
➞ the police never found the money which was stolen in the robbery
5) There was a big red car. It had been parked outside the house.
➞ there was a big red car which had been parked outside the house
6) Libya is a leading producer of oil. It is a country in North Africa.
➞ Libya which is a country in North Africa is a leading producer of oil
7) A chemical company has been bankrupt. It employed 4000 people.
➞ A chemical company which employed 4000 people has been bankrupt
8) A new drug may gives us eternal youth. It was developed by a British university.
➞ A new drug may which was developed by a British university gives us eternal youth
9) A new motorway is planned. It will cost 500 million pound.
➞ A new motorway which will cost 500 million pound is planned
10) Some weapons belong to the IRA. They are found at a flat in Bristol.
➞ Some weapons who are found at a flat in Bristol belong to the IRS
11) John Quincy Adams was born on July 11, 1767. He was the sixth president of the United States.
➞ John Quincy Adams who was the sixth president of the United States was born on July11, 1767
12) There were some children. They were swimming in the river.
➞There were some children who were swimming in the river
13) Tennis fans have been queuing all night at Wimbledon. They hope to buy tickets.
➞ Tennis fans who hope to buy tickets been queuing all night at Wimbledon
14) Some paintings haven't been found yet. They were stolen from the museum.
➞Some paintings which were stolen from the museum haven't been found yet
15) Two languages, Finnish and Swedish, are used in Helsinki. It is the capital of Finland.
➞ Two languages, Finnish and Swedish which is the capital of Finland are used in Helsinki