Stuck on last three clues: 5a style acquired here in Rome - 6 letters ?o?h?? 8d decide to finish - 8 letters ??n?l?d? 22d funny man oliver took in student? probably not - 6 letters ?a?d?y
19a Will and May are examples of this (9, 4) if 20D is DICK then 19A doesn't make sense: ????L?DRY ???B Artillery bomb is a possible, but doesn't make sense of 20D or 17D