1/ The hotel, which we stayed in, was very comfortable.

2/ He wants to know the reason why Mary left the job.

3/ There are the police man who caught the thief.

4/ Do you remember the day when we first meet Jim on?

5/ He gave her a watch which stopped after two days.

6/ The Red Lion is a pub where we met in for a drink.

7/ Here are the letter which arrived this morning.

8/ Mary is a girl whose voice is sweet.

9/ That's the house which I was born in.

10/ 8.30 is the time when the meeting begins at.

11/ Where is the lady who ordered the fish?

12/ Do you know the children who live in that house?

13/ The clothes, which are good quality, come from Marks & Spencet.