The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

After my dad drove away, I went into my house and climbed into a living room chair. I sat down and began my days of withdrawing from my mom, brother, and the rest of the world. I was in a complete daze. Nothing my mom said would stir me to move. I missed my daddy terribly. I thought, "What would I do without my daddy?”
The boy's （） on his father's leaving.