Rain is the youngest professor in your school. He is a subject teacher in science. He is tall with a very strong face, so even students will like his physical appearance, but he is strict and quick to get angry even for small things or just a little noise. As he entered the classroom, everyone stood up and greeted him. He looked at the whole class he said in a serious tone of voice

"Good afternoon. You may sit now so I can start my lesson,and please avoid making noise"