Read rules c and d in the learn this box again.Then rewrite these sentences in your notebook in a less formal style.

/>1)The car in which we drove to London belongs to my mum.
2)This is the address to which you should write.
3)The exam about which i am worried is on Monday
4)Chris is the friend with whom I went to itlly.
5)Them amn about whom i told you is over there.
6) Who is the girl to whom you were talking?