F: David, where did you get so many old books? ,M: Some graduates were selling their used books. They were really cheap so I bought some. ,F: But aren't you leaving China in 2 weeks? How can you finish reading so many books? ,M: I'll take them back to America. I want to continue to improve my Chinese so they'll be very helpful. ,F: When will you come to China again? ,M: I don't know. Maybe several years later or maybe next year. That all depends. ,F: Depends on what? ,M: It depends on whether my mom will recover or not. If she is still ill, I cannot leave her to work in China.
(A) F: Because your mother hasn't recovered yet, you can't decide when to come to Japan again. (B) F: You should persuade your mom to recover it. Now you even can't decide when to come to China again! (C) F: Bob, even you haven't found a job in China, you can also come to China again! Remember that! (D) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly?
B