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Which sentence correctly uses the past perfect tense to indicate an action that was completed before another action in the past?


A、She has finished her homework before dinner.
B、She had finished her homework before dinner.
C、She finished her homework before dinner.
D、She was finishing her homework before dinner.

发布时间:2025-10-10 02:19:59
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答案:She had finished her homework before dinner.
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