[解析]
(1)D.根据答语Wow!Volunteer?哇!志愿者?可知前文提到了与Volunteer有关的话题,与D项吻合I will work as a volunteer.我将会作为志愿者在那工作.
(2)B.根据答语A lot of things.I will pick up the rubbish,offer water to the runners and take photos for them.很多事情.我要捡垃圾,给运动员提供水以及为他们拍照.可知询问的是,在马拉松你将要做什么呢?即What will you do in the marathon?
(3)E.根据答语You should fill in the form on the Internet by Friday first你应该在周五前在网上填一个表,可知需要询问,我应该做些什么呢?即What should I do?
(4)F.根据上文Is there anything else I need to do?有没有什么事情我需要做的呢?答语是yes,可知后文还要你需要做的事情,与F吻合,You will also have an interview.你还有一个面试.
(5)A.根据上文I'm sure you can make it.I'm looking forward to working with you.我相信你可以做到的,我期待着跟你一块共事.可知需要对对方说的这些期望的话作出回应,与A吻合.I hope so.我希望如此.