Defining and non-defining relative clauses. Relative pronouns.

A person _____ has a lot of friends is happy.

The operation _____ was carried out yesterday was a great success.

Mary is looking for the day ______ they will move out of the city.

The shop _____ he bought the camera was full of people.

The person _____ gave you that information must be a genius.

The writer _____ books I always enjoy to read is Graham Greene.

This is the biggest mushroom _____ I have ever seen.

I will never forget the holidays _____ I went to Paris with my next of kin.

I am sorry we have nothing _____ suits you.

Mr and Mrs Bucket have a small boy _____ name is Charlie.

The country _____ he's going to spend his next vacation is Greece.

He gave me the letter, ... was in a blue envelope. 

He gave me the letter, ... I read immediately. 

Stratford-on-Avon, ... many people have written about, is Shakespeare's birthplace. 

We stopped at the museum, ... we had never visited before.

I've just come back from London, ... John lives..

Yesterday I met a woman named Susan, ... husband works in London.

They’re the people ... want to buy our house.

They should give the money to somebody ... they think needs the treatment most.

She’s now playing a woman ... son was killed in the First World War.

They’re the people ... bought our house. 

They’re the people ... she met at Jon’s party

Here are some cells ... have been affected