Related Clues:

• As there's no give in it, the professor took it as a matter of course
• Give on at the middle of this
• Stand around in the pub?
• How the professor dealt with what he was given to eat (6)
• Likewise he swallowed what you give him
• Stand around, perhaps, for entertainment
• The man of learning swallowed this for the present
• This has something to do with the end of 8 down
• How the professor had a meal, just for the present
• The boy swallowed whatever you give him
• The professor had a consuming gift to pass on
• Get on in time and give it
• The learned man ate what you give him
• What has this got to do with 2 down?
• What the doctor does - pay for the drinks