Help with parsing for last three please:
1A British force with calamitous error in cloud (5) I have B?f?G. Must be BEFOG, but why?
23A Didn’t continue with assistance of mike? (6) I have ?A?S?S. Looks like LAPSED (or PASSED, or CEASED), but why?
21D Grosbeak, for one, seizes large quail (6) I have ?L?N?H. Must be BLENCH, but why?