these are book and ruler 里面里的book和ruler 需要加s吗

These are their -(book) These are( ) 我们的 book andThese are( ) 我们的 book and those are yours. these are book and ruler 里面里的book和ruler 需要加s吗 Whoes _____(book) are these These figures are r < >book is mine,and< >are Lily's book's.A this,those B This,that C These those D Those these These are my book同义句 her these are book 连词成句 These are his hands and These are Chinese ( ) and those are English( ). Are ( )Kate's ( A.this,book B.that,book C.these,books D.those,book These story in this book are very interesting.改错 These are his English book找出错误并改正 you these book days this are reading 连词成句 Who's book are these on the desk?(改错） The book on these s_______ are on computer these, not, book, my, are连词成句 These are their new picture book.保持句意不变