15. B. in which
16. B. when
17. B. who/where
18. B. which
19. A. Sue lives in the house which is opposite my house.
20. A. which
B. Combine the following sentences, using relative clause with prepositions.
1. That is the mistake which I am complaining about.
2. This is the book which I'm looking for all year.
3. Who is the man with whom Linda is dancing?
4. He fell in love with the girl who left him after a few weeks.
5. I don't know the name of the woman to whom I spoke on the phone.
6. India is a country in which the earthquake occurred last month.
7. We have not decided the day on which we'll go to London.
8. Sandra, who you were talking to, works in advertising.
9. This is Mr. Carter about whom I was telling you.
10. That is the dog which I'm afraid of.