The room is dirty.What ______ you ______ (do) just now?I ______ (throw) the paper on the floor.

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The room is dirty.What ______ you ______ (do) just now?I ______ (throw) the paper on the floor.

did,do
threw
祝开心~

What did you do just now?I threw the paper on the floor

What have you did just now?I had thrown the paper on the floor.