改错This is a expensive book

this is a apple改错 This a book is good 怎么改错 this is a English car.改错 Is this a English computer?(改错） 改错题：This is a my book. Is this a red car nice?改错 This is a one way street改错 is this a youe pen 怎样改错 改错This is a expensive book this is a pen on English.改错 This is a exciting job.改错句 this is a exciting vacation改错 What is this?----This is a pencil sharpener改错 What is this?This is a jacket 改错 Is this a ruler.---Yes,this is.（改错） whats this?This is a M改错 This is a b and that is a f改错 What is this. 改错