4.13 Confident 自信
W: The final examination will be held at the end of this month. Have you made good preparation?
M: Sure. I've reviewed all the lessons I have learned this academic year.
W: Are you sure you can do well this year?
M: I am 100% certain.
W: According to what you did last time, I have my doubts.
M: I am sure I can get a 95 this time.