Defining relative clauses

There are various ways of adding more information to a word.  Look at these examples:

	A red book.			The book that I bought last week.
	A mathematics text book.	A valuable old book. 
	The book you lent me.

Decide which of these sentences contain 
	a)	relative clauses
	b)	adjectives
	c)	compound nouns

Try to add the following infomation to make one sentence:
(NB making a relative clause is not always the best way to do this).

I know a woman. She is a teacher.

I met a man at the party. He is  old.

This is a box. You can put your lunch in it.

Tony is a friend. I've known Tony since I was at school.

I've got a friend called Andrea. She lives in Manchester. She runs her own business.

Last week I bought a phone. It can send email and take photos.

We stayed in a hotel. The hotel has two swimming pools and a sauna.

We stayed in a hotel. It was only opened last month.

We went to a restaurant. The waiters wear fancy dress.

I once knew a woman. Her husband was a famous singer in England.

Answers

I know a woman (who) is a teacher.

I met an old man at the party. 

This is a box (which / that)  you can put your lunch in it.

Tony is a friend (who / that)  I've known Tony since I was at school.

I've got a friend called Andrea (who / that) lives in Manchester and runs her own business.

Last week I bought a phone (which / that)  can send email and take photos.

We stayed in a hotel (which / that) has two swimming pools and a sauna.

We stayed in a hotel (which / that) was only opened last month.

We went to a restaurant (where) the waiters wear fancy dress.

I once knew a woman (whose)  husband was a famous singer in England.