作业帮fell OR had fallenHe off the trees many times before he grew up.He-- off the trees many times before he grew up.
来源：学生作业帮助网 编辑：作业帮 时间：2024/06/13 22:19:33
fell OR had fallen
He off the trees many times before he grew up.
He-- off the trees many times before he grew up.
had fallen
用过去完成时态.