Finished, I think, but help with parsing 3 solutions, please. 4d Gauge measurement for English city (7) -e-d-n-. READING? READ = gauge?; in = inch (measure). G?? Is Reading a city?
17d Hole in small chamber where bread absorbs much water (3,4) -o- s-a-. HOT SEAT? Sea would do nicely for 'much water', but can't even see a definition for this.
21d Say something to spring vegetable (4) l-e-. LEEK? Spring a leak? Doesn't really parse. Many thanks for help