1. D
根据答语It's on Monday, the 12th of June. (在6月12日,星期一。)可知询问时间,因此疑问词用When,故选D
2. C
根据答语We need some water, some sweets and some balloons. (我们需要一些水,一些糖果和一些气球。)可知问句询问需要什么或需要买什么。故选C
3. E
根据前句的建议:What about some chocolate?(巧克力呢?)推测本处会说巧克力的好处。故选E
4. A
根据问句How about some juice? (橙汁呢?)以及答语I don't think so. (我觉得还是不要了吧。)推测会说不要橙汁的原因。故选A
5. B
根据答语98 yuan, please. (请付98元。)可知本处询问多少钱。故选B