根据首字母提示，补全对话。

Ben：Have you h 　　1　　 about an event that c 　　2　　 money for charity called Trailwalker?

Jack：Yes．Is it the long walk in the country o 　　3　　 by Oxfam Hong Kong?

Ben：Yes, it is．I'm thinking of joining it．It's a good c 　　4　　 to learn about working together．

Jack：Who can take p 　　5　　 in trailwalker?

Ben：People o 　　6　　 18 years old．They have to finish the walk w 　　7　　 48 hours．

Jack：It's a d 　　8　　 walk but I'm really i 　　9　　 in it．Do you think I can j 　　10　　 the walk?

Ben：Yes, sure．We can be in the same team．

Jack：Oh, that would be g 　　11　　．Let's find two more m 　　12　　．

补全对话。

Betty：　　1　　

Kate：Very well, thank you．

Betty：Oh．Let's introduce my friend．　　2　　, Bill．

Kate：Very nice to see you．

Bill：Me too．　　3　　．I have studied Chinese here for half an year．

Betty：　　4　　

Bill：P．E．

Betty：Do you miss your old friend and family?

Bill：　　5　　

Betty：　　6　　

Bill：Two brothers and a sister．

Betty：Sorry, I have to go now．See you then．

Bill：See you．