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- Complete the sentences using the Present Perfect Continuous form of the verb. 24 I money to environmental organisations for the last five years. (donate)
- 25 I at the zoo for a year already! (volunteer)
- 26 It for two hours and it won't stop! (rain)
- 27 The students to reduce pollution. (try)
- 29 Acid rain habitats for years. (destroy)
