May I go to the health center?
Sorry, I'm late.
May we pack up/pack our bags now?
What is the homework for today?
Could you explain it again?
Could I drink some water? I'm thirsty.
Please turn off/turn up the AC. I'm cold.
Teacher, please give us a point.
I don't understand.
Teacher, could you please help me?
May I come in, please?
May I switch on the lights?
Could you speak louder please?
Please open your book to page ____.
May I go to the toilet?
Could you help me with my homework, please?
May I open the window, please?