(Originais Teachy 2024) - Questão Médio de Inglês

In English, modal verbs are a special class of auxiliary verbs used to express ability, possibility, permission, or obligation. They play a crucial role in conveying shades of meaning and are often paired with a main verb to indicate these nuances. Consider the following excerpt from a short story: 'The gate was locked, but luckily I had the key. I inserted it into the rusted lock and turned. With a creak, the gate swung open, revealing the overgrown garden beyond. I knew then that I --- restore this place to its former glory; it was my duty.' Based on the context provided, identify and explain the function of the appropriate modal verb that best fits the blank space in the excerpt. In your explanation, discuss how the chosen modal verb aligns with the meaning conveyed in the sentence and justify why other modal verbs in the same family (e.g., can, could, may, must, should) may not be as suitable in this context.