Ответ:
1 My parents have been donating money to WWF for a long time.
2 The eco helpers have been planting the trees all the morning.
3 She has been collecting the rubbish to recycle for a week.
4 Engineers have been designing the green car for a long time.
5 Tony has been talking on the phone for two hours.
6 I have been looking for my keys since 11 a.m.
7 People have been polluting the atmosphere for 100 years.
8 Toxic fumes have been poisoning our planet for a long time.
9 Air pollution has been destroying the sculpture for 50 years.
10 We have been waiting for the bus for 20 minutes.
11 She has been playing computer games for 50 minutes.
12 They have been living in Moscow since January.