There are some books on the desk which i bought yesterday.是修

There are some books on the desk I bought the books which are on the counter. there are some books on the teacher's desk there are some books on the desk改为单数句 There are some books on the desk.(改为一般疑 There are some books on the desk.改为否定句 There are some books and a radio on the desk. there are some books on the desk 改疑问句 .改为一般疑问句!there are some books on the desk I bought the books which are on the counter和the books which What is on the desk?There are some books on the desk. 对画线部分提问：there are some books on the desk.(划线的是somebooks）