阅读对话，判断句子是否正确。

Mike & John: Happy birthday, Sarah!

Sarah: Thank you!

Mike: How old are you?

Sarah: I'm nine.

Mike & john: These（这些）are for you—cake, two kites and some dolls（玩具娃娃）.

Sarah: Thank you. How many dolls?

John: Four.

Sarah: Let's eat the cake!

Mike & John: Great!