— Next Monday is  my birthday.  

— Is that so?____  [ ]

A. I can't believe my eyes  

B. I'm so glad to hear that  

C. What presents do you want  

D. Many happy returns of the day

a、o、e开头的音节连接在其他音节后面的时候，为了避免音节界限发生混淆，要用顿号“、”隔开。