1.___His___ (他的) brother is a pilot._____Mine__ (我的) is a teacher and ___hers____(她的) is an engineer.
2.These shoes are not ____mine___(我的)._____They___(它们) are ____yours___(你的).
3.____I___(我) have done ____my___(我的) homework.Have ___you____ (你) done ____yours___(你的)?
4.These keys are not ____ours___(我们的).____They___(它们) are __theirs_____(他们的).
5.____Her___(她的) sister is a good friend of __mine_____(我的).
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