Остались заключительные два задания, помогите с решением, пожалуйста :)24. Переведите

Остались заключительные два задания, помогите с решением, пожалуйста :)

24. Переведите предложения, обращая внимание на видовременные формы страдательного задатка.
1. The letters are sorted into the different towns. 2. Many houses were burnt during the Great Fire of London. 3. Flowers are sold in shops and in the streets. 4. Nick will be sent to Moscow next week. 5. I was given an interesting book at the library last Friday. 6.We shall be invited to the party next Sunday.

31. Перепишите предложения, обратите внимание на придаточные предложения; переведите их на российский язык.
1. They will all be surprised, if I make a mistake. 2. If no one came to help, we should be obliged to do the work ourselves. 3. If my sister hadnt gone to St. Petersburg, we should have spent the summer together. 4. If my friend is at home, he will tell us what to do. 5. If he had worked hard, he would have achieved great progress. 6. I would write a composition long ago, if you didnt disturb me.