A major purpose of this series on Environmental Chemistry, therefore, is to present a reasonably uniform view of various aspects of the chemistry of the environment
Como passar esta frase para o present perfect?
Basta substituir is to present por has present ?
Soluções para a tarefa
Respondido por
1
Resposta:
A major purpose of this series on Environmental Chemistry, therefore, HAS BEEN to present a reasonably uniform view of various aspects of the chemistry of the environment
Explicação:
Basta mudar o IS que está no presente para o HAS BEEN que esta no present perfect
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