what are these keys ( for 还是to

what are these keys ( for 还是to What _____ these keys?Are these yours?用介词填空 Whose keys are these? 英文题- what ()these keys?Are they yours?- no,they aren`t.They are Anna`s. whose keys are these?they are y什么 keys. These are keys?是疑问句吗 These are my keys.改成一般疑问句 these are your keys 改为单数句 Are these your keys?做否定回答 These are her keys的同义句：These keys are（ ）. —What are these?—Oh,a set keys .They're mine.这句话哪里错了 These are my keys.是不是单复数转换? Are these your keys?做肯定 否定回答 are these your keys?用mikes作否定回答 Are these your keys的同义句是? These are my keys.They aren't( )( ).改为同义句 these are some keys in classroom e7改为否定句 Whose keys are these?They’re Lucy’s.是什么意思?