Stuck on a few clues. 1a-Waste energy to operate fiddle (6). s?????. 3d-feel anger towards being taken in by a frontman(9). Riddle? 16d-passes fish agreement (9). h???s?a?e.21d-talk going round Brazilian city in vehicle (7). ??a?i?t.22d-a cheap reconditioned helicopter (6). ???c?e. Any help appreciated.