根据语境，填写适当的词语或句子补全对话。
A: Look at the man running down the street. Why do you think he is running?
B: He could be running for exercise.
A: No. He might be running to _ 1 ___. He is wearing a suit.
B: But there is no bus on this road. Buses are not 2 to run here.
A: Oh! Maybe he is going to be late and running to work.
B: I don't think so. He _ 3 __ scared.
A: Yes. You are right. Look! What's that in the sky?
B: It _ 4 __ a UFO. And it's landing.
A: Look at that woman with a camera.
B: She must be a reporter from the TV news.
A: No. Look at those other people. They are actors. Oh, I see. 5 .
