I need a break/I need help/I don't know
You are getting really tired doing your work at school. What can you say?
I need a break, please
Your teacher asks you what today's date is, but you don't know. What can you say?
I don't know.
You want to get a toy but you can't reach it. What can you say to your mom/dad/teacher?
I need help. (or) Please Help. (or) Help, please.