13. A) Packing up to go abroad.
B) Drawing up a plan for her English course.
C) Brushing up on her English.
D) Applying for a visa to the United Sates.
原文：
B) Drawing up a plan for her English course.
原文：
13. M: So, that’s what’s been keeping you so busy recently!
W: Yes, I’ve been tied up with my studies. You know I’m planning to go to the United States this coming summer, but I’m a bit nervous about my English.
Q: What is the woman busy doing?