选择适当的句子完成对话。(只填序号) Susan: Hello, Linda! Linda: 1.________ This is my friend Sam. Susan: 2.________ Linda: He lives in the U. K. He arrived in China yesterday. Susan: 3.________ Sam: 4.________ Susan: 5.________ Sam: Six months. A. Did you have a nice trip? B. Where does he live? C. How long will you stay in China? D. Hello, Susan. E. Yes, I did.