听力原文:M: Can you come to my birthday party tonight?W: Sorry, I'm afraid not. My mother
听力原文:M: Can you come to my birthday party tonight?
W: Sorry, I'm afraid not. My mother is ill, so I have to look after her.
Q: Why can't the girl go to the birthday party?
(23)
A.She will do her homework.
B.She will go to another party.
C.She has to look after her mother.