The new stadium will be opened next month. The stadium holds 90,000 people.
The new stadium, which holds 90,000 people, will be opened next month.
Thank you for your letter. I was very happy to get your letter.
Thank you for your letter, which I was very happy to get.
Do you know the reason … there are no penguins at the North Pole?
why
Lots of people walk in the park. I jog there every morning.
Lots of people walk in the park where I jog every morning.
The man is in prison. Janet fell in love with this man
The man who/that Janet fell in love with/ Janet fell in love with / with whom Janet
fell in love is in prison
Mr Yates is retiring next month. He has worked for the same company all his life.
Mr Yates, who has worked for the same company all his life, is retiring next month.
I’ve just bought some books about astronomy. I’m very interested in astronomy.
I’ve just bought some books about astronomy, which I’m very interested in.
Most of the people … she met were from Sydney
whom
My uncle’s farm is twenty kilometres from here. We often visit it.
My uncle’s farm, which we often visit, is twenty kilometres from here.
That man over there is an artist. I don’t remember his name.
That man over there, whose name I don’t remember, is an artist.
The young boy was given a reward. He had saved the drowning child.
The young boy who had saved the drowning child was given a reward
I bought my first car ten years ago. I was a salesman then.
I bought my first car ten years ago, when I was a salesman.
Mark’s sister is getting married tomorrow. She has just graduated.
Mark’s sister, who has just graduated, is getting married tomorrow.
There is a girl in my class. Her family emigrated from India.
There is a girl in my class whose family emigrated from India.
She showed me a photograph of her son. Her son is a policeman.
She showed me a photograph of her son, who is a policeman.
John is one of my closest friends. I have known John for eight years
John, who(m) I have known for eight years, is one of my closest friends.