补全对话。
Kimi:Hello!
Angela: ____
Kim:What's your name?
Angela: ____ ____
Kimi:My name's Kimi.
Angela:I have a pen.
Kimi: ____
Angela:Goodbye,Kim.
Kim: ____
A. Me too.
B. My name's Angela.
C. Hi!
D. Bye!
E. What's your name?
开元盛世是在( )统治时期
设等比数列{an}中,前n项和为Sn,已知S3=8,S6=7,则a7+a8+a9=( )