先阅读短文，再从方框中选择适当的词并用其正确形式填空，使短文完整、通顺．一词只用一次一空限填一词．方框中有一个词是多余的．

    Lots of men and women go shopping on Black Friday in the USA and other western countries．Supermarket gives discounts（折扣）of up to 70%．It's a big shopping day in the USA and it into Britain five years ago．On that day，the police go to the supermarkets and shoppers are there．The police are worried that the supermarkets are tooWith the help of the police，shoppers can get in and out of the supermarkets safely．

    Shoppers in the UK are happy on Black Fridaythe clerks in the supermarkets are not．Because they are very tired on that day．On the USof Thanksgiving，people spend it with their family．Many big stores aren't open on that day．There are over 60 letters on the website Change，org．All of show that they want Black Friday to change．They think family is more important than profits（利润）．