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МатематикаВопрос:
28. We ... hard to raise awareness of environmental problems. (work)
Ответ:
We have been working hard to raise awareness of environmental problems.
Похожие
- 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 ... natural habitats for years. (destroy)
- 30. John already went to the pond, ... ?
- 31. Ben has called his dad, ... ?
- 32. Some species of tiger are endangered, ... ?
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- 34. John didn't collect the cans and newspapers, ... ?
