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1. What does nuclear radiation come from?
2. What does this factory pollute the water with?
3. What does it poison the soil with?
4. What does he grow crops with ?
5. What does she ruin national beauty by ?
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b)
1. What should scientists study ?
2. What should scientists investigate ?
3. What should people clean ?
4. What water should people drink ?
5. What should the factories produce ?
Все члены семьи Дугласа готовились к Рождеству.
white cardboard
a small pidgeon
extinct mammal
to destroy habitat
to harm
to endanger an insect
to heal animals
to include into one's plan
bird species