Finally getting round to doing crossword late today. Can't seem to finish off / understand two clues
29ac ( 8) Macavity - b-e-t---
27d (4) Drop ball ---d
I'm thinking about Absentee for former, but don't understand why .
Any help as usual, much appreciated.
Also , assuming Grab is solution to 10d, but can't seem to parse that to Grouse?