Jackson: Hi Hugo, I heard from my colleagues that a new marketing trainee is coming.
Hugo: In fact, she has been working for 2 weeks.
Jackson: Really? How come I’ve just realized at present.
Sharon: So do I. A young girl working in company these few days but actually I didn't know who she was. She seemed to be intelligent and able to work independently.
Hugo: Exactly, it's her. She is really on the ball. All superiors gave her good comment.
Sharon: Oh! What's on the ball?
Jackson: On the ball is used to describe a person who is knowledgeable, competent, skilful and aware of things.
Jackson: Wow, that's why Mr. Watson offered her loads of tasks.
Sharon: I think she is capable of doing these.