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

问题描述:

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

did,do
threw
祝开心~threw和throw是什么关系?threw 是throw 的过去式。