1. Complete with the present perfect continuous form of the verb in brackets
1.I _______________________ (read) this book since 9 a.m.
2. The eco helpers _____________________ (plant) the flowers all day.
3. His friend __________________ (donate) money to WWF for a long time.
4. We _______________________ (collect) the rubbish to recycle for a week.
5. Engineers______________________(design) the eco car for a long time.
6. Gregory _______________________ (talk) to his mother for an hour.
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