20: Is this the letter which you wanted me to mail yesterday?
21: Do you know the men who were arrested on the street yesterday?
22: Don't open the door on which there is a red sign of "danger".
23: The young man whose father is my neighbor came to see me about the job.
24: The girl who just laughs met Tom's father in this market.
25: My brother is very talented whom Tom saw in the USA.
26: The notebook whose cover is blue is mine.
27: I received two job offers neither of which I accepted.
28: I recently went back to Paris which is still as beautiful as a pearl.
29: I missed seeing the old lady who used to sell flowers on that street.
30: The chair which Sally inherited from her grandma is an antique.
31: The architect with whom Mario works is brilliant.
32: Mrs. Lake is the teacher whose class I enjoy most.
33: People fear flying which people avoid traveling by plane.
34: The woman who was wearing a green hat was sitting behind me.
35: He works in a factory where bicycles were made.
36: Is that the girl whose horse won the Derby last year?
37: The building where you can come and wait for me is the tall hall.
38: The book which I wanted to buy was too expensive.
39: My brother who married yesterday is admired by his wife a lot.
40: The book which belongs to my teacher is on the table.
41: The film which was on VTV3 channel was interesting.
42: The story which the math teacher told us was funny.
43: The man who lives next door to me is a designer.
44: Is the man whom we saw standing at the gate your father?
45: The birds which are in our garden sing very beautifully.
46-: I like the films whose main characters have a happy life at the end.