Choose the correcr answers.(请选择正确的答案.)
1.Heis ______ (the/a) last one to come.
2.The book is ______(my/mine)
3.Did you see ______(this/those)beautiful houses over there?
4.Please help ______(yourself/you)to some meat.
5.I asked her for some oil,but she hadn't ______ (any/some)