I've recently restarted doing cryptic crosswords with the Times Quick cryptic
I completed it yesterday other than 2 answers but even with answers today I can see no reason in them.
First of these - 'insect leaving gnu, say, to run off'
The answer is elope which I know is run off but why??
Second- 'promised the return of northern banks'
Answer is sworn which is obviously the promised bit and the 'n' is from northern but otherwise I have no idea
I'd be grateful for someone to shed some light!