将下列句子合并为含有定语从句的复合句

1.The postcard is from my pen pal which I received just now.先行词是物所以用which
2.Have you heard of the boy who won the gold medal in the sports meeting 先行词是人用who
3.The student whose name is Linda is in the reading room.这句中指物主代词用 whose
4.I always remember the days which we spent them together 同1which
5.Can you describe the town where you were born 先行词是地点用where

1.The postcard (that/which/X ) I received just now is from my pen pal.
先行词postcard，在后面从句中作宾语，选关系代词或省略
2.Have you heard of the boy who won the gold medal in the sports meeting?
先行词boy，在后面从...

I received the postcard which is from my penpal just now.
Have you heard of the boy who won the gold medal in the sports meeting?
The student whose name is Linda is in the reading room.
I always remember the days that we spent them together.
Can you describe the town where you were born?

1.The postcard what I received just now is from my pen pal.
2.Have you heard of the boy who won the gold medal in the sports meeting?
3.The student is Linda that in the reading room
4.I always remember the days that we spent them together.
5.Can you describe the town which you born in ?

the postard which I received it just now is
Have you heard of the boy who won the gold medal in the sports meeting
The student whoes name is Linda is in the reading room
.I always remember the days when We spent them together
Can you describe the town that You were born in