Mr Green is fond of rock music,___________his wife has no interest in it at all．

　 A．however　　 B．while　　　　 C．as　　 D．unless

 Mr Green is fond of rock music,___________his wife has no interest in it at all．

A．however        B．while         C．as             unless

Mr Green is fond of rock music, ________ his wife has no interest in it at all．

1. A.
   however
2. B.
   while
3. C.
   as
4. D.
   unless

Mr Green is fond of rock music,___________his wife has no interest in it at all．

       A．however             B．while               C．as         D．unless 

Mr Green is fond of rock music,___________his wife has no interest in it at all．

       A．however             B．while               C．as         D．unless