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Read the beginning of this mystery novel and select ALL the grammatically correct options that could logically complete the sentence.
By the time Detective Harper finally burst through the dining room doors, ________
The correct answers are: the guests had already finished the dessert, and the host was staring at the empty bowls. the guests were still eating the dessert, blissfully unaware of the impending danger. the guests had been eating the dessert for at least ten minutes.
In a past narrative, when establishing the background for a sudden action ("burst through"), multiple past tenses can be used depending on the meaning:
- Past Perfect Simple ("had finished") shows an action completed before she burst in.
- Past Continuous ("were eating", "was staring") shows an action in progress at the moment she burst in.
- Past Perfect Continuous ("had been eating") shows an ongoing action that started before she burst in and continued up to that point.
The options using present perfect ("have finished", "has stared") or present simple ("is staring") are grammatically incorrect here because they clash with the past time frame established by "burst".