Stuck on a few this weekend and wonder if anyone can help please? 17 a what unemployed waiters do (4,5,5) ---- t-e-- -e--- 21 a drinks container from hollow in ground (9) ------o-- 1 d which said younger boy became a doctor (6) w---o- 9d laser usherette redirected using button (7,7) ---t-e- ------- (i know it is an anagram but stumped!) 16d dodging exercise (8) --------