Complete the sentences using the verbs in the Present Perfect Continuous tense.
15.1 to clean out the nearby parks since my school years. (volunteer)
16.She money to WWF organization for a year. (donate)
17. Tony on the phone for two hours. (talk)
18.Acid rain natural habitats for years. (destroy)
19.My friends in the lake for an hour already. (swim)
20. The students to reduce pollution. (try)
21. The government to reduce air pollution for years. (try)
22. We money to Greenpeace for a long time. (donate)
23.They ..
hard to build nesting boxes. (work)
24.Everybody the environment for over ten years. (study)
25.It
for two hours and won't stop! (rain)​

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