260.here is the fried beef with green pepper and onion.
261.and i have ordered another dish—plain fried shrimps.
263.it's sweet and sour pork.
264.i'm afraid there is a mistake.i ordered a sweet and sour fish.
266.excuse me，sir.i ordered the hairy crab，but you gave me the green crab.
267.i'll get you the head－waiter.
268.i do apologize for giving you the wrong dish.
269.i'll change it immediately for you.
270.i'm afraid i don't have enough time to wait for the next crab.