what are the three steps to''trick or treating''that one must carry out to obtain candy?

问题描述:

what are the three steps to''trick or treating''that one must carry out to obtain candy?
For Helloween,kids like to go out to gather candy from their neighbors.This is known as"trick or treating".

在"不给糖就捣蛋"中,要实施哪三个步骤才能拿到糖?
在万圣节,小孩喜欢出门去找他们的邻居拿糖果,这就是众所周知的"不给糖就捣蛋".