Could you please choose the answer and explain to me? The preparations............by the time the guests.............. A. had been finished/ arrived B. have finished / arrived C. had finished / were

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Could you please choose the answer and explain to me? The preparations............by the time the guests.............. A. had been finished/ arrived B. have finished / arrived C. had finished / were arriving D. have been finished / were arrived.

回答 · 1

Answer: A had been finished/arrived We use the Past Perfect Continuous tense to show that something started in the past and continued up until another time in the past.

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