21a) In place from which air comes (6) _ P _ _ _ D 3d) Shrubwith yellow drooping leaves (8) _ A _ U _ N _ M is it LABURNUM? 15d) Can't be copied (10) I _ I _ _ _ A _ _ _ 28a) Very cold,frosty ( 5 ) G _ _ _ D
Thanks R&M - glad you liked the jokes, more if anyone wants them but not strictly speaking Q&A ! No, I'm not professional but helps having a mental age of 12. Happy puzzling! ja