It is Monday night. You need your mom to sign a form for work. It is due tomorrow. Your mom is talking to your dad about the electric bill. What should you do?
Wait for them to finish talking.
You are at work. You want to take a break. Your boss is helping a customer. What should you do?
Wait until your boss finishes. Then say, "Excuse me. Could I take my break now?"
You finished your task at school. Now you need a new task. You go to ask your teacher and he is talking to another teacher. What should you do?
Wait for your teacher to stop talking. Then ask