Topic: Group verb,

Best Answer Explained in Below-:

The phrase “He was unconscious for three hours but he-- in hospital” requires a suitable verb phrase that conveys the idea of regaining consciousness. Among the options provided, the correct choice is "A) Came round."

"Came round" is a colloquial expression often used in British English to describe the process of regaining consciousness after being unconscious or fainting. It indicates a return to awareness and alertness, which is precisely what the sentence implies after the individual’s prolonged unconscious state.

In contrast, the other options do not fit the context of regaining consciousness:
- "B) Come about" is generally used to describe a change in situation or circumstances, not related to personal awareness or consciousness.
- "C) Got round" typically refers to overcoming a problem or persuading someone, lacking relevance to the idea of awakening.
- "D) Got on" often pertains to progress in a task or relationship and doesn’t relate to the state of consciousness in this context.

Thus, "came round" is the only option that effectively completes the sentence, making it clear that the individual regained consciousness while in the hospital.