从方框中选择恰当的单词填空，每词限用一次
Whose   lost   mine   my   your   yours   Her   hers   careful   purple
【小题1】— Tony, is this __________ bag?
— No, it’s not __________. Let me ask Lingling, and maybe it’s __________.
【小题2】— __________ pen is this?
— It’s __________ pen. I am looking for it.
【小题3】— What colour are Mary’s shoes?
— __________ shoes are __________.
【小题4】— Where is Mr Smith?
— He is talking to a boy at the __________ and found office.
【小题5】— Is this sweater __________, Tom? Please be __________ with your things.
— Thanks a lot. I will.