Final answer:
The phrase 'they sent _____ the doctor' can be completed by using a word like 'to', 'for', or 'after' depending on the context of the sentence. The statement is likely from an English subject context, and it pertains to scenarios in literature where characters might need to communicate with or seek assistance from a medical professional.
Step-by-step explanation:
The phrase 'they sent _____ the doctor' demonstrates the use of a blank space that requires a missing word to complete the sentence meaningfully. Filling this blank with an appropriate word, such as a pronoun or a name, dictates who is intended to be the subject of the action, thus contextualizing the sentence within a narrative or dialogue. Common English practice involves using words like 'to', 'for', or 'after' to indicate the direction of the action towards the doctor.
In the provided references, various scenarios depict characters interacting with medical professionals or expressing the need for medical attention. These snippets from literature highlight the diverse situations in which characters might send for a doctor, seek medical advice, or undergo treatment.