Lesson 73 Happy Birthday ,Billy! Lesson 74 Wheres the aeroplane flying?New words birthday b:,dei 生日 year j 年 nine years old 九岁 happy hp高兴的;乐意的 Happy birthday!生日快乐 present prznt .礼物 for f：为了 Here is a present for you.这里有件礼物给 你。 Its made of chocolate它是由巧克力做的 be made of 由制成b:,dei birthday j year hp happy prznt present f： for Sandy and Sue are going to Billys house. Its Billys birthday. Billys nine years old today. “Happy birthday,Billy,” Sandy says. “Happy birthday,Billy,”Sue says. “Here is a prese
