A group of students is organizing a small science fair in the school gym. At this very moment, Sara mixes…

Questão

A group of students is organizing a small science fair in the school gym. At this very moment, Sara mixes baking soda and vinegar in a glass bowl to create bubbling foam. Nearby, Tom builds a model car with cardboard, and Lina sketches a poster with colorful markers. The teacher watches as everyone works on their projects. Analise o texto e escolha a sentence that correctly uses the present continuous to describe Sara’s action now.

1. A) Sara is stirring baking soda with vinegar in a glass bowl.
2. B) Sara mixing baking soda and vinegar in a glass bowl.
3. C) Sara is mixing baking soda and vinegar in a glass bowl.
4. D) Sara are mixing baking soda and vinegar in a glass bowl.
5. E) Sara is stir baking soda and vinegar in a glass bowl.

✅ Resposta correta: alternativa C

Resolução passo a passo

1. O texto diz que, 'At this very moment', Sara mixes baking soda and vinegar in a glass bowl. A expressão 'at this very moment' indica uma ação em andamento agora, o que pede o present continuous.
2. O present continuous é formado por verbo auxiliar 'to be' conjugado no presente (am, is, are) mais o verbo principal com -ing. Para o sujeito singular 'Sara' (terceira pessoa do singular), usa-se 'is'. Logo, a estrutura correta é: Sara is mixing baking soda and vinegar in a glass bowl.
3. Analisando cada alternativa:
4. A) Está gramaticalmente correta na forma, mas o verbo 'stir' (mexer) descreve outra ação; o texto diz que Sara mistura (mix), não que mexe.
5. B) Falta o auxiliar 'is', então não forma o present continuous.
6. C) Está correta: sujeito Sara, auxiliar 'is', verbo mixing, descrevendo a ação em andamento.
7. D) O auxiliar 'are' não concorda com o sujeito singular Sara.
8. E) Falta o -ing no verbo ('is stir' deveria ser 'is stirring') e o verbo 'stir' não corresponde à ação do texto.
9. Conclusão: a alternativa correta é a C, em concordância com o gabarito oficial.

💡 Dica: Observe the present continuous structure: subject + is/are + verb-ing.

Alternativa por alternativa

Raio-X da questão

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