完成对话 通读对话，根据上下文补全对话。（共5小题，计10分）
A: Can I help you?
B: Yes，please. 　　           .I want to order a birthday cake for my mother.
A:             　 ?
B: A large cake，please.
A:                        ?
B: Please write “Happy Birthday to Mother” on the cake.
A: OK.                     ?
B: It’s 8910566.
A:                    ?
B: My address is 56 Lincon Drive.