• 2022-06-17 问题

    Itmighthavesavedmemuchtrouble_____theschedule. A: didIknow B: haveIknown C: doIknow D: hadIknown

    Itmighthavesavedmemuchtrouble_____theschedule. A: didIknow B: haveIknown C: doIknow D: hadIknown

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