对话填空
A: He is very good, isn’t he?
B: Sorry, what did you say?
A: I (76) s__________ the singer was great.
B: Yes, and interesting to watch.
A: Have you seen him here (77) b_________?
B: Oh, yes. He’s always at (78) e__________ the same place on Saturdays when I come into town. I think he probably (79) w__________ the music and words by himself, (80) b________ I’ve (81) n________ heard any of the songs before.