Переведите в косвенную речь:1)Our teacher said,"Thackeray039;s novel are very interesting

Переведите в косвенную речь:
1)Our teacher said,"Thackeray's novel are very interesting ."
2)Ann said to us,"They haven't come yet."
3)Nina asked her friend,"What did the professor speak about in his lecture?"
4)She said to me,"Have you sent them an e-mail yesterday?"
5)"Do you often meet my sister at the library?" He asked me.