You _______ be conscious of the signs that are there for everybody's safety., should, shouldn't, You ________ lose your ticket., must, mustn't, You _______ be rude, disruptive., must, mustn't, You ______ push and shove and try and run for the door if they're closing, should, shouldn't, You _______ always let somebody off first before you get on., should, shouldn't, You _________ try and get on at last minute when the doors are closing, must, mustn't, You ______ take a bottle of water with you, to keep hydrated., must, mustn't, You ________ wear heels because the platforms are very short., must, mustn't, You _______ interact with too many people because you might miss a stop., should, shouldn't.

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