she's been a league member for three

she's been a league member for three 英语句型转换题~1.He has been a League member for three years.It_ th 把 He has been a League member for three year.改成一般过去式 I have been a League member ( )three years 用适当的介词填空 She has been a member of the Art Club for three years.(同义句转换 He has been a league member for five years.（同义句转换） He has been a league member for 5 moths. 同义句 填空She has been a League m___ for two years. Her mather has been a club member for three years同义句转化 Her mother has been a Party member for three years.（同义句） Her her mother has been a party member for three years =her moth a League member什么意思?