阅读理解。
5/7 Monday
    I'm busy this week. The following Sunday is Mother's Day and there are many activities at school. One of them is PTA Day. It's on Friday. Mum and Dad are both coming. I'm a little nervous (紧张的). What will Mr. Chang tell them?
5/8 Tuesday
    Mr. Wu is our new music teacher. He teaches us Mother, a beautiful song about our love for mothers.
5/9 Wednesday
    We practice Mother today. This is the special present for our parents on Friday.
5/10 Thursday
    It takes us two hours to decorate(装饰) our classroom for PTA Day. I'm tired. Mum is nervous. It's  the first time for her to meet our teachers. She is always nervous about talking to teachers from her childhood(童年). That's funny.