He hadn't far when he was knocked () by a big cow and fell down.
问题描述：
He hadn't far when he was knocked () by a big cow and fell down.
into,at,down,over应该填什么?；Now Professor Bumble went on () on the country road.to;for;with;at应该填什么求理由
答
over,意思为撞翻；with,意为开始另一件事,从now可以看出.