选择正确的单词填空。
(1)A:Whose socks(is are)these? B:They (is are)my socks.
(2)A:(Is are)it Li Shan’s skirt?B:No,it (is are)Liu Mei’s.
(3)A:Who(is are am)he?B:He (is are am)my teacher.
(4)A:What(am is are)this?B:It(am is are)a sweater.
(5)A:(Is Am Are)you Alice?B.:Yes,I(Is Am Are).