补全对话。
— Hi. You look excited. 1_____
— It is sth said that a singing contest will be held in our school soon.
And I think it a good chance to exercise my singing talents.
— 2_____
— A pocket radio will be given as a reward to the first prize winner.
— Are you going to take part in it?
— Sure. 3_____
— Really? But I don't think you've practiced enough.
— I'm going to. I bet(打赌) I can get the first prize.
— 4_____ I think you need to have a music teacher help you.
— I don't think it necessary. 5_____
A. By the way,are they giving prizes?
B. people say I have a good voice.
C. I don't know what others say about it.
D. You can do a lot better next time.
E. It'll turn out fine If I practice a lot.
F. What's happening?
G. Don't be so sure.