阅读对话,判断正误。
Grandma: What are you doing, John?
John: I am making a birthday chart(表格) or our family. When is your birthday?
Grandma: It's in May.
John: My mother's birthday is in May, too. When is Grandpa's birthday?
Grandma: It's on June 18th.
John: There are three birthdays in June. My birthday is in June. Uncle Bill's birthday is in June, too. When is Aunt Mary's birthday?
Grandma: Her birthday is on November 15th. Cousin Alice's birthday is on April 6th.
John: Great! Here's the chart.