Dad called. I don't know what to say.

Dad is the closest person to you. You have nothing to say to him because you don't care enough about him.

Speaking has several purposes, one is to show concern, the other is to know his state, and the third is to tell him what he wants to know. The purpose of father's hard work outside is to make you live a better life. Others have it, and he hopes that his family can have it, and he hopes that through his efforts, you will not work as hard as him. The purpose of calling him every day is to care about you and want to know your life and study status. So the phone call to my father should be very clear.

First, how is your own study? Have you made progress and worked hard? How's life? Is there anything at home?

Second, are you working hard? Pay attention to health and safety, go to bed early at night, don't be too tired, and so on.