13d.blow ones mind?,yes,its shona doing exercises
20d go one better without domestic cut(5)-----
18a the alternative choice?no,its popped back briefly(6)--t---
I haven't 'taken' to caps. I've always posted the answers to crossword questions in caps, because that's how people fill them in, and how newspapers publish the answers in grids.
Even though the OP hasn't posted these in the correct crossword section, that's clearly what they are.