1. Rewrite the sentences:
1. Has been stolen, a painting which belongs to the Queen
2.Have been worn by the famous opera singers, these beautiful costumes are for sale,
3.Is known by the most people as a TV presenter, the star of the show is an actor.
4.Sitting at the back of the theatre, it was difficlut for people to hear all the words.
5. Had been signed by the author, a cpoy of the novel was bought by me.
6. Was written by my piano teacher, this piece is one of my favorites.
7. Leaving in five minutes, the fast train will get you to London in less than an hour.