Thanksgiving Day is an American national holiday which often

Thanksgiving Day is an American national holiday which often lasts four days.Americans celebrate it on the fourth Thursday of November each year,The day is set aside for giving thanks,it becomes a traditional day for family reunion .
As it is a day of family reunion,on the eve of Thanksgiving,members of the family will drive and even fly home.The next day,they sit around a table,enjoying the traditional dinner together.Roast turkey ,sweet potatoes and a pudding are cooked for the Thanksgiving supper.
Thanksgiving Day is also a day for students to give thanks to parents and teachers,for people still thank of it as a day for giving thanks.
On Thanksgiving Day,all stores are closed.In some big cities,there are carnival parades for children.In other cities,there are always important football games.Important football games are televised.As a result the streets become very quiet,as if the whole city was a deserted place.The following day,however,everything becomes especially alive and active.People go to supermarkets and big department for there is a big saLe.They get what they need at much lower prices.
判断正误
有一个是：on thanksgiving day,all stores are open.
我绝对是正确,答案为什么是错的

答案当然是错误的.
楼主请看第三段第一句：On Thanksgiving Day,all stores are closed.
在感恩节,所有的商店都关门歇业.
而题目是：On thanksgiving day,all stores are open.
在感恩节,所有的商店都开业.
再问： sorry,看错了