this .................. Hoa. She ...................... my sister . She is 14 years old who ................ they? they ............ Lan and Trung . They ................... my friends how old .............. your brother ? he ................ 20 years old ............ father a doctor ? no he ......... .He ............ a worker ................. her mother í a worket ? yes ,she ............. a worket Thanh is my friend . her brother ................ 14