延伸与提升 I.补全对话。（其中有两项多余） 4:You must be really excited about leaving for America tomorrow,Li Ping! B:Yeah.1.E A:What are you nervous about? B:I don't know many of the customs and manners in the USA.2.C 4:Sure. B:3.D 导航页导航页 延伸与提升 Ⅰ. 补全对话。(其中有两项多余) A:You must be really excited about leaving for America tomorrow,Li Ping! B:Yeah. 1. ______ A:What are you nervous about? B:I don’t know many of the customs and manners in the USA. 2. _______ A:Sure. B:3. _______ E C D