句子改错Look back on the first twenty years of my life

句子改错Look back on the first twenty years of my life “Please look on the biackboard.改错? look back on the day and look back on造句 look back on与look back into Look at the biad on the tree 改错 Lets look at the book on the desk改错 look ,my kite is up there on the sky.改错 Look!whose kite is it on the tree?改错 改错do you look things on the intemet There are animals on the farm.Look,twelve sheeps.改错 英文作业look back on the past semester 英语翻译用 look back on look back on 是什么意思啊? 英语句子改错 The front cover of the book has the same colour as the back. look back on 与 look back to 有什么区别? look back at 与look back on区别 look back和 look back on用法一样吗?