2: Accommodate bear (3,2)
5: Bury 'im for the meantime (7)
9: California has an artificial waterway (5)
10: Hang around and look at that old Roman road (6)
12: Long time to the third of June (5)
13: Some doctors oust head of Johnson and Johnson? (9)
16: 25-down Point in these pastimes to clash with 26-across? (5,6)
17: Show off Mark's Mazda Miata, for one (6,3)
18: As an aid to memory for broken men, first mode harmonics hold no danger. (9)
19: Lodge heard discharge (5)
20: Prepare too much for apparent downpour (9)
21: Daytime TV show one of the Marx brothers brought back (5)
23: Part of the USA obscured by mist and dew? (7)
25: Unease from irritating gnats (5)
26: Pair of witnesses' mostly smooth transfer may end with Tony Soprano, possibly (7)
27: Fish in sea initially react to heat, perhaps (5)