O-6:on the ball 精明的
A:If you keep your eye on the ball, you will surely succeed.
A:如果你专心，你一定会取得成功。
B:But I am unconfindent of myself.
B：但我不够自信。
A:If you aim at doing something,just keep it on. And sooner or later you'll make it. You should be confident and consistent. Please keep it in mind.
A：如果你决定做什么事，一定要坚持下去，迟早会成功的。你必须有信心有耐力，请记住这一点。
B:OK. I'll try.
B:好吧，我会努力的。
