那时人们看见那个老人正在上公共汽车. The old man_________________________at that time.
问题描述：
那时人们看见那个老人正在上公共汽车. The old man_________________________at that time.
答
was saw getting on the bus
答
was ,seen ,getting , on ,the ,bus
答
应该填 was seen to get on the bus