a) общий - Will he be waiting for you at 7 in the evening?
к подлежащему - Who will be waiting for you at 7 in the evening?
альтернативный - Will he be waiting for you at 5 or 7 in the evening?
разделительный - He'll be waiting for you at 7 in the evening, won't he?
специальный - What will he be doing at 7 in the evening?
b) общий - Was Robert sleeping on the floor, when his mother came into the room?
к подлежащему - Who was sleeping on the floor, when his/her mother came into the room?
альтернативный - Was Robert sleeping on the floor or reading, when his mother came into the room?
разделительный - Robert was sleeping on the floor, when his mother came into the room, wasn't he?
специальный - What was Robert doing, when his mother came into the room?
c) общий - Is the girl holding a brush in her hands?
к подлежащему - Who is holding a brush in his/her hands?
альтернативный - Is the girl holding a brush or a cup of tea in her hands?
разделительный - The girl is holding a brush in her hands, isn't she?
специальный - What is the girl holding in her hands?
d) общий - Is he travelling without his children?
к подлежащему - Who is travelling without his/her children?
альтернативный - Is he travelling with or without his children?
разделительный - He's travelling without his children, isn't he?
специальный - Who is he travelling with?
e) общий - Was Fred listening to the teacher, when she looked at him?
к подлежащему - Who wasn't listening to the teacher, when she looked at him/her?
альтернативный - Was Fred or Robert (yep, the one that was sleeping on the floor when his mum came in ) not listening to his teacher, when she looked at him?
разделительный - Fred wasn't listening to the teacher, when she looked at him, was he?
специальный - What was Fred doing/not doing, when the teacher looked at him?
