This is a nice book哪里错了?

This is a nice book哪里错了? This is a nice book 哪错了? This is a English book哪里错了 this is a nice book的感叹句? This is a nice book,____it?填空 this book is mine book.哪里错了?怎么改? who is book is this 哪里错 What is this?This is a watch哪里错了 she is reading a book.a book is about animals.哪里错了 is that your a book?哪里错了 Is it a book这句子哪里错了 What’s this?This is a pen.哪里错了?