Fill in the blank with the correct form of the given word.
1. There are only 20 ............................... in my class.  (study)
2. The class is ............................... students do not stop talking to each other.  (noise)
3. Your room is a ......................... please pick up your toys.   (messy)
4.In the afternoon, they can join many .......................... clubs.     (interest)
5. This film is so ....................        (bore)