Final answer:
To complete the sentence, 'The food itself isn't horrible, but the restaurant is pretty dirty,' the intensive pronoun 'itself' emphasizes the subject 'the food.' Understanding pronoun cases, such as subjective and objective, is crucial when constructing sentences.
Step-by-step explanation:
The sentence should be completed with an appropriate intensive pronoun to emphasize the subject 'the food'. An intensive pronoun is used to emphasize its antecedent, and is usually placed immediately after the noun or pronoun it is emphasizing.
In this case, the suitable intensive pronoun to complete the sentence is 'itself', resulting in the following sentence: 'The food itself isn't horrible, but the restaurant is pretty dirty.' This emphasizes that it is the food alone, rather than something else related to the restaurant, that isn't horrible.
When using pronouns, it is important to be aware of the pronoun case. For example, compound subjects require subjective case pronouns, as in 'Antonio and I have occasional disagreements about the dishes.' Meanwhile, compound objects require objective case pronouns, like in 'Disagreements about the dishes come up between Antonio and me.'
Pronoun case is also important in comparisons, as seen in 'Antonio cares more about having a clean kitchen than I [do].' When the pronoun is the subject of a sentence or a clause, the subjective case 'who' should be used.