The railway _______ Qinghai to Tibet is the longest plateau (高原) railway in the world.
He is going to be a computer programmer when he _______ college.
She’s going to take ________ lessons because she wants to be an actress.
I’m going to be ______ engineer.
He’s going to practice _______ basketball every day.
---What is he going to ________ when he _______ up ? --- He’s going to be a doctor .