my books are in the bookcase.变一般疑问句

my books are in the bookcase.变一般疑问句 The books are in the bookcase.(改为一般疑问句) My books are on the bookcase.改成一般疑问句 There are some books in the bookcase 改为一般疑问句 His books are in the bookcase.变为一般疑问句是不是Are his books in the Our books are in the bookcase.(变为一般疑问句） __ __ books in the b Anna's bookS are on the bookcase.一般疑问句 I have some books in the bookcase.(改为一般疑问句) the books are on the bookcase 改一般疑问句 怎么改啊 还有the keys are in My books are (in the bookcase) 对括号内提问 His books are in the bookcase 改为一般疑问句 照片上的女孩是你妹妹吗?翻译 there are many books on my desk变一般疑问句