A: Hi, Tom. Why 1. _ you do PE today? B: I have broken my arm. A: 2. _ did you do that? B: I fell off my bike. A: Sorry to hear that. 3. _? B: Yes. I went to the clinic yesterday, and the X-ray showed that my arm was not serious. A: OK. Why do you 4. _? B: Because I'm afraid I'll miss more lessons and I'll be left behind. A: Don't worry. Just take care of yourself. I think I can 5. _ you. B: Thank you.