E Complete the sentences using the Present Perfect Continuous form of the verbs in brackets. (try)

24. He has been studying the environment for over ten years.
25. We have been donating to Greenpeace for a long time.
26. It has been raining for two days.
27. He has been trying to raise money for the zoo for months.
28. The government has been trying to reduce pollution for years.
29. I have been volunteering to clean out ponds for a year now!