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.

[Q]: M: Excuse me, I'm mailing this package to Japan. ,F: Alright. Fill out this form about the contents and value. Do you want to insure it? ,M: I don't think so. It's only some books. ,F: Are you sending it surface mail or airmail? ,M: Airmail, please. ,F: OK. That's $25. ,M: Here's $30. ,F: Alright. Here's your change.
(A) M: So, as I'm mailing this package to China, it's free and the change is $ 30? (B) M: So, it needs $25, and as I give you $30, the change is $ 5? Okay, I see. (C) M: I am really sorry, I did not catch that. Would you slow down, please? (D) M: You mean the change is just $ 5? But you say that's $20, and I give you $30!
[A]: B

[Q]: M: I can't wait for my birthday party this Saturday evening. I hope it will be better this year. I'm hoping for something surprising and a lot of gifts. ,F: It will be. There will be a lot of people at your party. ,M: I know my friends are preparing to give me a big surprise these days. ,F: How do you know? ,M: I saw Tom wrapping a big box with Alice, Bob and Annie
(A) F: Oh, I am pretty surprised about that, they really did a lot things for Bob's birthday party this Saturday evening. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: To tell the truth, I'm as excited as you are, I also want to know the result of the test we did yesterday. (D) F: You are so calm, don't you want to know what they have prepared for Alice's birthday party this Saturday evening?
[A]: B

[Q]: 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?
[A]:
D