17d) hasten (8) e??e???e 28a) based on hypothesis (1,6) a ???o?i 24d) glaringly bright (5) l???d thought 17d could be expedite and 24d a theory but that gives an i where the y comes in grateful for...
18a) surrounded by (7) ??o???t
16a) state of bliss (8) ???a?i?e
7d) plan in a clever way (8) e???n??r
67a) incite by encouragement (4) a??t
thanks in advance for help...