Are these your sisters?Yes,they are .改为单数句
These are your sisters.改为否定句
these are your keys 改为单数句
1|Are those your sisters?yes,they,re 2 these are tom and pet
these are his sisters.改为否定句
Are_____they\these your parents?Yes,they are.
Are these your cousins改为单数形式
are these your books?改为单数形式
These are your books.(改为单数)
Is your sisters nurses?Yes,they are.哪错了?
Are these nice pictures 改为单数句
These are his brothers 改为单数句
These are yellow purses.(改为单数句)