Ответ:
1. The wood cutters used their axes to chop down the trees.
2. They need two more chairs to sit on.
3. Why have you bought only two kilos of potatoes?
4. In the fall, the leaves begin to change color.
5. All of the buses left at the same time.
6. The mayors of all neighboring cities are coming to greet guests.
7. For Christmas my parents gave my sisters dresses and my brother and me watches.