짝지어진 대화가 어법상 어색한 것을 고르세요.
① A: Did you see the elephant at the zoo?
B: Yes, it looked huge.
② A: Where is Junho? I can’t find him.
B: I saw him washing his hands in the restroom.
③ A: What are you drinking, Laura?
B: Green tea. It makes me feel warm.
④ A: Let’s discuss our next topic.
B: Can we take a rest for a while?
⑤ A: Our classroom is closed.
B: Oh, I had the door lock yesterday. Let me give you the key.