Tim has been in Australia.His brother hasn't seen him( ) Jan

Tim has been in Australia.His brother hasn't seen him( ) Jan tim has been in australia for six mouth.his brother hasn't s tim has been in australia for six months .his brother hasn"t his young brother once wrote to him in 2005,and 〔hasn't been Davy has never been to Australia._____?A.hasn't he B.doesn't Tom hasn't come back I wonder what has been happened to him. 请高手详细分析Though my brother has been in Australia for a year,he 1.he hasn't been able to lose his weight,( )he has done much neither i nor he has seen the has seen可以改成hasn‘t seen吗?为什么 my brother hasn't been back yet.=my brother hasn't returned Neither you nor he has gone/has been/hasn't gone/hasn't been Tim has tried twice,and his father asks him to have__third t