1. This is the house where we often stay in the summer.
2. I'll show you the second-hand bookshop where you can find valuable books.
3. I have not decided the day when I'll go to London
4. He was born on the day when his father was away.
5. The book where we can look up telephone numbers is a telephone directory.
6. Mrs.Brown who is carrying out an urgent operation now is a very good doctor.

1. This is the house where we often stay in the summer.

2. I'll show you the second-hand bookshop where you can find valuable books.

3. I have not decided the day when I'll go to London.

4. He was born on the day when his father was away.

5. The book where we can look up telephone numbers is a telephone directory.

6. Mrs. Brown who is carrying out an urgent operation now is a very good doctor.