he must be bad.he must be very wise.用either...or连接

1、He must either be very clever or very foolish. he must be either mad or drunk he must be very busy today ,( ) The dentist thought he must be very. He must be happy! he must ( )here.《be》 英语翻译You must be a very bad learner,or else you must be going He must be shy,__he? ? Subscript indices must either be real positive integers or Subscript indices must either be real positive integers or l He must be at home.为什么用be? isnt he her third husband?No He must be hei fourth or fifth?