Class Mad Libs
Using Mad Lib books or making your own by taking passages from books your class has read works well for this activity. You can have a student come up to the front of the class and ask the rest of the students for the required parts of speech. Or, you can write a passage from the book your class is reading on the overhead (keep it turned off until all the blanks are filled in). This is fun for the whole class, and it's educational.