The boy's book d_____ on the ground while he was running.填空注意时态
问题描述：
The boy's book d_____ on the ground while he was running.填空注意时态
答
dropped,望采纳,谢谢^_^
The boy's book d_____ on the ground while he was running.填空注意时态
dropped,望采纳,谢谢^_^