看图，选择正确的句子。(30分)
⑴
A．It's nine o'clock.
B．It's twelve o'clock.
⑵
A．I'm fine.
B．I'm eight.
⑶
A．Happy birthday!
B．Happy Teachers' Day!
—How old are you?
—________
A．Fine.B．I'm nine.
—Let's sing.
—________
A．OK. B．Here you are.
—What time is it?
—________
A．I'm in Class Five.
B．It's five o'clock.
—Happy birthday!
—________
A．That's OK. B．Thank you.