Нужно написать предложения в Passive voice

1A sound of violin is being heard in the hall. 2 He is praised by his father for working hard. 3 Bob was taken for his brother. 4 I was waken up at 7 o`clock by my mother. 5 The envelope was found on my desk. 6 This book was bought a week ago. 7 The picture was painting by the great artist. 8 The window was broken the other day. 9 The letter will be posted tomorrow. 10 Your report will be discussed next week. 11 The time-table will be changed in a week. 12 We have been met at the station by Tom. 13 The letter has been brought recently. 14. Milk has just been spilt by Jack. 15 This cup has been broken by my little brother. 16 The room was dusted carefully. 17 She has been shown the shortest way to the station. 18 The lecture was asked a question about Dreiser. 19 I was lent this book last Tuesday. 20 A telegram was sent by her brother. 21 The doctor was sent for. 22 The teacher is being listened to attentively.  23 His speech has been spoken about much. 24 This article is often referred to. 25 The plan has been agreed upon. 26 His lecture is been listened to with great interest. 27 He is always found fault with. 28 This house is never lived in.