These are my keys.是不是单复数转换?

These are my keys.改成一般疑问句 These are keys?是疑问句吗 Whose keys are these? These are my keys.是不是单复数转换? These are my keys.They aren't( )( ).改为同义句 Are these your keys的同义句是? whose keys are these?they are y什么 keys. Those are my keys .对画线部分提问（画线部分是 my keys） these are your keys 改为单数句 what are these keys ( for 还是to Are these your keys?做否定回答 Now where are my keys? ______(it) are my keys. These are her keys的同义句：These keys are（ ）. What _____ these keys?Are these yours?用介词填空 I lost a set of keys.然后是用 Is this yours?还是Are these yours? These are my keys.改为否定句,改为单复数转换改为一般疑问句或提问,肯定句做回答. 1.These are my friends.2.Those aren is jackets 3.Are they rulers?4.The keys are yellow.5.Are those your pencils?都改成单数句