题干
— Gary, have you received his _________ to the party?
— Yes, I've promised to take part in it on time.
A：invitation
B：notice
C：information
答案(点此获取答案解析）
A
— Gary, have you received his _________ to the party?
— Yes, I've promised to take part in it on time.
A：invitation
B：notice
C：information
中，a = 6，b=4，C=
，则