Поставь слово в скобках в Present Perfect Continuous (с маленькой буквы!).
1 We ___________ hard to build nesting boxes. (work)
2 I ___________ to clean out ponds for a year now! (volunteer)
3 He ___________ the environment for over ten years. (study)
4 He ___________ money to Greenpeace for a long time. (donate)
5 It ___________ for two days. (rain) *