3) 1 Those were Cowboys
2 Mary found flights to Deli
3 Robert made these bookshelves himself
4 the windows and doors are closed
5 there are mice in the kitchen
6 it's white geese
7 those weren't sheep. Those were donkeys
8 it isn't interesting stories
9 is those Eric knives
10 there were beautiful bright stars in the sky
11 it weren't the selected songs
12 is those studious pupils
4) 1 a fallen leaves, the stupid students, the German guests, a difficult subjects, the broken windows, an interesting examples, a modern planes, the old coins, a beautiful glasses, the driving licenses, a fresh tomatoes, a white ceilings, the biggest rivers, an interesting proposals, a standing people, the important addictions, a tasty suppers, the endless days, the recorded talks, an angry geese, a bitter drinks, the new teapots