是a cousin of theirs还是a cousin of them?

是a cousin of theirs还是a cousin of them? my cousin is a 1.7-metre-tall boy的同义句是my cousin is a boy of linda was more of a best friend than a cousin Most of ________like Chinese food ,A.them B.theirs some of ( ) A.them B.theirs C,其他 their cousin ( ) (buy) a pair of ( ) (sunglass ).how cool ! My cousin,Daniel,___(wear) a pair of glasses. My cousin gave up the _______ of working a His cousin is a fan of basketball改同义句 a photo of your cousin 的同义句 A cousin is your_______chijd this is a frieng of _____ A.they B.them C.theirs D.their