I Need Help In Here _ Please

[mr_s@ber]

I bought a new radio although it costme a lot of money
(The new radio / Which )

the new radio which i bought cost me a lot of money

2-
I was sitting next to a boy in the exam .He told me the answers
(The boy who )

the boy who i was sitting next to told me the answers
the boy who told me the answers was sitting next to me

3-
I lent you a book . It was written by a famous write
(The book which
the book which i lent you was written by a famous writer


so on


و الله أعلى و أعلم...........