My grandpa __________ (sleep) for three hours when I woke him up.Corre...
Explanation:
The correct answer to the given sentence is "had been sleeping" because it is in past perfect continuous tense. This tense is used to describe an action that was ongoing in the past before another action took place.
Here is a detailed explanation of the sentence:
- The sentence is in the past tense, as indicated by the word "woke" which is the past tense of "wake".
- The action of sleeping started before the moment of waking up and continued until that moment.
- The past perfect continuous tense is formed using the auxiliary verb "had" in the past perfect tense, the main verb "been" in the present participle form, and the main verb "sleep" in the base form with "-ing" added to the end.
- The sentence can be rephrased as "By the time I woke him up, he had been sleeping for three hours."
- The use of past perfect continuous tense emphasizes the duration of the action of sleeping that had been happening before the moment of waking up.
In summary, the correct answer "had been sleeping" indicates that the action of sleeping had started before the moment of waking up and had been ongoing for a duration of three hours until that moment.
My grandpa __________ (sleep) for three hours when I woke him up.Corre...
I woke him up told the action has been done in past, so the blank would fill with the past perfect progressive as particular time period has indicated.