Related Clues:

• What has this got to do with 2 down?
• Give the professor what he swallowed
• The start of 1 across might do nothing back here, yet do it (2, 4)
• Give no change in what's on your palm
• Learned to have eaten what you give him
• Learned enough to have fed for the present (6)
• Likewise, one was 9 across what you give him
• The professor consumed this for the 20 across
• The prof. swallowed what you give him
• The professor took what you give him, of course
• The professor swallowed what you give him
• For Fido to get around and do it up will be of benefit
• Likewise one was fed for the present
• Whatever you gave the wise man he swallowed it
• Give this to the wise man before he was fed