怎样改错啊 This is a key,that is a pen

怎样改错啊 This is a key,that is a pen is this a youe pen 怎样改错 This is a library.改错,应该怎样改证? This is a key改为一般疑问句? This is a key.(变为复数) this is a apple改错 This is a white key 的提问This is a white key ,对“a white key 进行提问 It is a key.( )this is my pen.( )black.括号里填什么啊It is a key.( )this is my pen.( )black.括号里填什么啊 what's this?A this is key B it's key应该选几 This is a key.（对划线部分提问）划线部分：a key._______ ________this? This is a key.a key画横线 对划线部分提问 This is a key in Engelish.(对划线部分提问)a key是划线句 连词成句英语is,in,a,English,key,this This is a key to my door.(翻译) This is a key.(对划线部分提问） this is a key of the door修改病句 用is in a English key this 组成句子 This a book is good 怎么改错