Relative clauses

Look at these examples of relative clauses:

We can combine the two sentances, 

*Notice that we use who,/that, or which/that to substitute the subject of the second sentance.

I like a woman. She lives next door. :
I like the woman who/that lives next door.



She has a son. He is a doctor:
She has a son who / that is a doctor.

We bought a house. The house is 200 years old:
We bought a house which / that is 200 years old.

Now answer the following exercises:

RC1

RC2

RC3

RC4