Get ready for homework (4)
I believe the answer is:
prep
I believe this clue is a double definition.
'get ready' is the first definition.
(I've seen this in another clue)
'homework' is the second definition.
(I know that homework can be written as prep)
'for' acts as a link.
(Other definitions for prep that I've seen before include "warm-up race" , "Homework (abbrev.)" , "Homework (abbr.)" , "School work done outside lessons" .)