Помогите пожалуйста с заданием)))

Combine the sentences with a relative clause, and commas in the correct place

1. My son is at university. He studies French there.

2. His friend came to stay. His name was Mark.

3. Ben enjoys maths. It is his favourite subject.

4. London is in England. England is in Europe.

5. Kay lives in Devon. She works as a dentist there.

6. I bought a cake. It was made with cream.

1. My son is at university where he studies French.2.  His friend , whose name was Mark, came to stay. 3. Ben enjoys maths that is his favourite subject. 4. London is in England which is in Europe. 5. Kay lives in Devon where she works as a dentist. 6. I bought a cake that was made with cream.