105 cryptic

not my best on this one!!
5a intrigued as college head enters, strangely defiant ?a?c???t??
13a in shape of prune ?r??
17a mash from buffet ????d
21a heather is circling, and coming down to earth ????ing
42a trapping funny crone on phone c?r?e?ing
68a sound of two, initially, then one ????
73a lie about getting in surprisingly diverse consignments ??????r?r?
9d do relocate mate in tower above ??????t?
10d returned amounts to communists embracing merriment ?e?????
14d bird American soldier raised in open building ????r?
17d prays out loud of honour ????r?
55d confusing red tape about sweetheart was mentioned again ?e??????
56d hearing of hairstyle in trial ?r?b????
carrying influence ?e?r?n?
thanks