Definition: In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.
Input: M: What do you want to do after graduation, Mary? ,F: I like to go into the management. I've applied for several jobs, and already got some offers. ,M: Good for you, Mary. You are always about the most hard-working student in our class and your efforts finally paid off. ,F: It's so nice of you to say so, Lucas. And how about you? ,M: I have to do some more studies to become a lawyer. ,F: Oh, being a lawyer is not easy nowadays. And you have to overcome a lot of difficulties to achieve your ambition. ,M: Definitely. But if our ambitions were so easy to achieve, we would soon get bored. ,F: That's sure. But there's another story. Some people were working really hard yet not succeed. ,M: That is why ambition needs to be realistic. You can't (?) too high. ,F: Sounds reasonable. But according to my understanding, a careful plan in advance places the most important role in achieving success.
(A) M: Why do you think that setting practical goals is important to success? (B) M: Why don't you agree with me that planning in advance is important to success? (C) M: I agree with you. Having a keen interest is the most important to success. (D) M: I didn’t hear you. Please could you tell me again?

D