1. I am looking for my glasses, without which I can’t watch TV clearly.

2. The house in which I lived was far away from my workplace.

3. The company in/for which I worked was founded five years ago.

4. The address to which my letters were sent was in South Africa.

5. This is the book for which I paid 8 dollars.

6. I remember the day on which I joined the Party.

7. I remember the days during/in which I lived there.

8. I know the reason for which he was late.

9. Is this the play about which you were talking just now?

10. This is the watch for which I am looking.