This is an alternate content page containing a Sorting Activity. It has opened in a new window.
The activity has categories and cards. Cards may have text or an image. Assign the cards to the proper categories.

Categories:
Necessity (required)
Lack of Necessity (optional)
Prohibition (not allowed)

Card 1:
Text: Soldiers must not disobey their superior officers.
Card 2:
Text: Doctors have to graduate from medical school and pass an exam.
Card 3:
Text: You don't have to pay your credit card bill all at once.
Card 4:
Text: Students don't have to register on campus. They can do it online now.
Card 5:
Text: Nobody has to come to work tomorrow. It's a holiday!
Card 6:
Text: Taxpayers must pay their taxes by April 15th each year.
Card 7:
Text: A person has to be 21 years old to buy alcohol legally in Florida.
Card 8:
Text: We have to hurry! We don't want to miss our flight.
Card 9:
Text: You must not touch the electrical wires!
Card 10:
Text: Passengers must show their passports to travel internationally.