1. G: What are you doing?
B: I’m thinking. I don’t know the answers to the questions.
2. B: Where is Jim now?
G: He might be in the classroom.
3. G: Must I go to work?
B: No, you needn’t.
4. B: I feel terrible. Could you do my homework for me?
G: OK, but you don’t have to finish it at once.
5. G: Hurry up, Mike. The bus is coming.
B: Sorry, I can’t walk. My leg hurts.