根据对话情景,在空白处填入适当的语句,使对话恢复完整。 A: Hello, this is Cathy! B: _______________________________? A: I am in Mexico. I am calling to say “Happy birthday” to you. B: ______________________________.. A: How is it going with you? B: Great. ________________________________? A: Not bad. ______________________________? B: I am having a party. My family are here. A: That sounds great. _______________________? B: Terrible(糟糕的). It is cold and snowing.