Are these his pictures?作肯定回答

Are these his pictures?作肯定回答 Are these his pictures 作否定回答 These are nice pictures.变为一般疑问句,并作简要的肯定回答和否定回答 these are nice pictures改为一般疑问句并作肯定或否定回答 Are these cars?作肯定回答 Are these your sisters?（作肯定回答） Are these toys yours?（作肯定回答） Are these your lunchboxes.（作肯定回答） are these/those your rulers?(作肯定回答) Are these English dictionaries?作肯定回答 _________,they_________ 1.Are those his friends?(作肯定回答) are these 做肯定回答