15.聽第四段材料,回答第15至17小題. 15.When will the man go to Ying He hotel? A.The next weekend. B.The next day. C.Seven days later. 16.How much will the man pay for the rooms? A.40. B.80. C.$160. 17.How will the man pay for it? A.Pay for it online. B.Pay for it when he comes to the hotel. C.By the message.