Whose are these new rackets?They are __________(there).

Whose are these new rackets?They are __________(there). Whose rackets are those 同义句转换 whose pens are these?____(these/they) are mine whose books are these?They're t______ 什么时候句子前面用what,there,they,this,these,are,whose,is, Whose teachers are these They are ours改成单数形式 帮帮忙吧whose books are these?They are not_,but_. whose keys are these?they are y什么 keys. Whose _____(Walkman)are these?Are they the ______(twin)? 英语Whose autivity books ( are ) these?They are the (students‘ 单项选择：Whose book are these?They are （ ）. These new houses are so nice.__________ are very expensive.