你想知道高伟的弟弟多大了，你应该怎么问呢？________
A．Who's that boy?
B．How is your brother?
C．How old is your brother?
我爱我的爸爸妈妈，可以说：________
A．I love my mother.
B．I love my father.
C．I love my father and mother.
你向爸爸介绍Miss Liu的时候可以说：________
A．Hello，Miss Liu.
B．This is my teacher，Miss Liu.
C．She's my teacher，Miss Liu.
图中人物在说什么，你知道吗？猜猜看，选择正确的句子。(8分)
four ＋ five ＝________ A．nine B．ten