Teach + Patience

For last week, I be a teacher for my little brother. He had an exam. So, now I wonder how teacher can teach us without enough patience??

First day, I still have my patience. Second day, my patience decrease.Third day, I mad at him. I asked him the same thing and he cannot answer me. All he know is playing computer games. I asked him to repeat that exercise 10 times, he also mad at me. But who cares, I trying to teach him a real lesson, so that he will pass his examination with flying colors. Then my parents can be proud of m efforts on teaching him. 

It is totally exhausting!!!