Написать ответы на why do we travel?

We are traveling to see all the sights of cities and countries and get to know new people

His advice is quite useful. It is worth following.
Why are your clothes so dirty?
Who is to blame that this information was not sent in time?
Though the news was rather sad, he pulled himself together and continued working.
Your son is making good progress.  But I don't feel like praising him yet.
Where is the money? I've put it into your bag.
The information sent by you turned out to be quite reliable. It helped us a lot in our work.
I am looking forward to hearing/having news from you.  It is always very interesting. 

1Well-bred people are loved by everyone.
2Money will be retured in time.
3He was asked not to ring her up.
4Has her picture been sold yet?
5An agreement is being signed.
6These wonderful houses were built last year.
7His pictures are always laughted at.
8They were being looked for the whole morning.
9This text must be learnt by all pupils.
10When he came home supper had already been cooked.
11The composition was written without mistakes.
12All dishes were put(placed) on the shelf.
13His lectures are always listened to with great interest.
14All invitations have been written.They can be sent.
15Her report was being discussed at 3 o'click.
16I'm not sure she will be helped.
17Have the copybooks been given to all pupils?
18Everything has been told was truth.
19I wonder when we will be met.
20Nothing was seen in the darkness.

Вот это Passive Voice!)))