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.

These are my keys.They aren't( )( ).改为同义句 these are your keys 改为单数句 These are my keys.改成一般疑问句 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. My keys are lost.(改为反义句) these are some keys in classroom e7改为否定句 Whose keys are these? These are my keys.是不是单复数转换? My keys are on the table.改为一般疑问句 my keys are under the book(改为一般疑问句） 句式转换 同义词Those dictionaries are Helen‘s Are those her keys?Tese are my dictionaries Are those her erasers Is that Eric's schoolbag?Are these your rulers?改为同义词Those dictionaries areHelen‘s Are those her keys？These are my d These are my brothers改为一般疑问句 these are my oranges(改为单数句式) These are my grandparents.改为同义句 These are my books 改为否定句 These are my friends.改为否定句 These are my clothes.改为同义句 These are my pencils改为单数句