Напиши предложения множественном числе?

There are many pages in books. Guys were riding bikes. There are green desks in class rooms. Friends presented me toys.

1. Starks on your roof bring all kinds of good luck.
Do starks on your roof bring all kinds of good luck?
What do starks on your roof bring?
2. They build great messy nests, sometimes right on your roof. 
Do they build great messy nests, sometimes right on your roof?
Where do they build great messy nests? 
3. But on your roof they are noisy.
Are they noisy on your roof?
Where are they noisy?
4. The teacher was very pleased with Lina`s story.
Was the teacher very pleased with Lina's story?
Who was very pleased with Lina's story?

1) The ground was covered with snow.
2) If I were in your shoes,I would do it secretly.
3) Both are good football teams.Any can win,and each needs a victory.
4) All of these things -school property.
5) I will not do it.It is my duty.
6) This whole situation was desperate.No one knew what to do.
7) You go on the wrong track.In your place I would look for in another city.
8) What are you holding up?Your show the tower?
9) Do not threaten us.
10) Do not look so closely at people.It is impolite.
11) Would you like to join us?