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※ 다음을 읽고 물음에 답하시오.

W: (가) I haven't seen you in ages, Minsu. What's going    (나)   ?

M: I've been working   (나)   my research.

W: What's it about?

M: It's about the best way to reunify the two Koreas.

W: Sounds important. When You're finished, I'd like to read it, (다) if you don't mind.

M: Sure. I'll be happy to give you a copy.

1. 민수가 연구하고 있는 것이 무엇인지 고르시오.

① 수명연장 방법       ② 사무자동화 방법

③ 남북통일 방안       ④ 대체에너지 개발

⑤ 소득향상 방안

2. 위 줄친 (가)부분과 바꿔 쓸 수 없는 것은?

① It's been a long time.

② Long time no see.

③ I haven't seen you for a long time.

④ I've been wanting to meet you for some time.

⑤ It's a long time since we met.