30.请用完整句子回答问题 , 请阅读下面的文章, 根据所提供的信息, 用完整句子回答问题.
Today is the Dragon Boat Festival. Mr. Gao is standing near the window. His wife, Mrs. Gao, is sitting behind him and reading a book. She closes the book and asks her husband. "What are you looking at?"
"I'm looking at the boy," Mr. Gao answers. "He's under the tree near our house. He's standing by my scooter."
"Oh," Mrs. Gao says, "What is he doing now?"
"He's cleaning the seat," says Mr. Gao. "Now he is riding my scooter."
Mrs. Gao looks out of the window and then she says, "Ah, don't you know who he is?He's our son!He is going to buy some Zongzi. You must wear your glasses!"