I Need Help In Here _ Please

[111994]

أرجوكم اريد القاعدة أو طريقة الحل للجمل الآتية و ما شابهه و دي علي فكرة جمل rewrite ا

1-
I bought a new radio although it costme a lot of money
(The new radio / Which )
2-
I was sitting next to a boy in the exam .He told me the answers
(The boy who )
3-
I lent you a book . It was written by a famous write
(The book which
و شكرا علي الحل مقدما