this is a book with pictures in it.为什么picture要加s?

This is a book 是用this is a book of english 还是用this is a book with english为什么 Is this a book? Yes,this is. This is s book.(a book提问) This is a book答语 This is a book( )plents.A.about.B.in.C.at.D.with this book is a little girl alice a about called b with called This book is ( ) Chinese history A.about B.for c.with D.in this is a book with pictures in it.为什么照片要加s? this is a book with pictures in it.为什么picture要加s? This is a book.对a book进行提问 This is a book 改为复数句 This is a interesting book.找错误! this is a book改为复数形式 This a book is good 怎么改错 Is this a book?的复数句 改错题：This is a my book. This is a book变成一般疑问句