whose是什么意思,whose怎么读

科普版英语四下lesson 1《whose watch is it》ppt课件4
定语从句关系代词which,who,whom,whose的用法ppt
socks whose socks are these? they're sarah's.
that,which,who,whose
二,再听一遍并且回答问题 whose t-shirt is this? (这是谁的t恤衫?