Some answers to these plus the rationale if possible should see me through what seems to be an interesting puzzle this week again! Many thanks in advance!
4d Bosses getting doctor after expression of doubt(7):
?M?????
6d Insectivore in blades mangled(6): ?E???N
26d Severe controls covering tense hour on Sabbath(8)
???A?ES?
33d Monster restrained by one with chilled drink(6 2 words): ?M?TE?