Answer
8a) the alarm would go off, 8b) the water would flood many cities, 8c) we'll get some more, 8d) I'd take it to the police station, 8e) you'll wake up the neighbours, 8f) I'll be in Paris at 6.00, 8g) you wouldn't see me anymore, 8h) I'll buy a new bike, 8i) you would feel better, 8j) I'll buy it for you.