阅读下面这段文字回答问题。
如果你生活在乡村，催你晨起的公鸡，夕照中牧归的牛羊，守护你平安之夜的爱犬，都曾经是你童年的朋友。放眼远眺，杨柳青青，麦浪滚滚，桃花含笑，杏花飘香，是你最熟悉的景色。春水澄碧，游鱼嬉戏；梁上双燕，春来秋去，曾引发你无限的遐想。蛙鸣声声，流萤点点，伴你进入仲夏夜之梦。

已知a²﹣b²=$\sqrt{6}$，a﹣b=$\sqrt{3}$，则a+b=____ 

Bill: Hello, is that Dad?

Dad: Yes，it's me. How's your holiday? Are you having a good time in Sanya?

Bill: Yes. I'm collecting shells on the ____now. Where are you, Dad?

Dad: I am in the ____. I am ____a book.

Bill: Is Sally ____TV in the living room?

Dad: No. She is writing a ____in her bedroom.

Bill: OK. Miss you, Dad. Bye.

Dad: Bye.