task 2.
1. has been
2. packed
3. haven't played
4. have helped
5. have closed / that happened
6. Did your business course start
7. did you have / bought
8. Did you see have bought
9. have arrived / brought
10. started
task 3.
словарь
кровь
жертва
выставка
удача
определение
пеший туризм
парк развлечений
приятель
железнодорожная система
примеры лень. . )