are the sunglasses cheap?(作肯定回答)

Are the books in the bookcase?(作肯定回答) Are there many books in the bookshop?作肯定回答! Are your cups on the table?（作肯定回答） Are your cups on the table?(作肯定回答） Are the books on the desk?作肯定回答,Yes,they are .而不是,Yes,there Are these his pictures?作肯定回答 Are these cars?作肯定回答 is the paper on the chair?(作肯定回答） Are the chaies under table The students are trying to follow the orders.改为一般疑问句?作肯定回答! Are the boys decorating the house?（作肯定和否定回答） The students are cleaning the classrook(改为一般疑问句并作肯定和否定回答） The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答)