A、He was tired. B、His appointment was changed. C、He had a flat tyre. D、His bicycle was stolen. C

W: Is it supposed to rain today?
M: If you believe the weather forecast, we’d better bring our umbrella.
Q: What does the man mean?

W: Why are you so late? I’ve been waiting for more than half an hour.
M: My bicycle had a flat tyre and I had to walk.
Q: Why was the man delayed?