Complete estas frases con la forma correcta de los verbos
Learn, be, do, need, react
If we study, we__
If we produce rubbish, our planet ___badly
If people don't understand environmental providers, they ___anything to solve them
If there are more people on earth, we___to produce more food and potable water
If we find other ways to feed ourselves, there much to worry to warry about
Respuestas
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If we study, we learn.
If we produce rubbish, our planet reacts badly.
If people don't understand enviromental providers, they won't do anything to solve them.
If there are more people on earth, we will need to produce more food and potable water.
If we find other ways to feed ourselves, there won't be much to worry about.
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