阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从1~10各题选项中选出最佳答案。

Debbie's 15th birthday party will come this Saturday, November 14th. She plans 1 a meal in a restaurant with 2 friends and then they'll have a party at her house. Her mother 3 a birthday cake for them. 4 her friends need a place to stay for the night, they can sleep on the floor in the sitting room and they should 5 sleeping bags.

The meal is at Mama Mia's, a good Italian restaurant. It will begin6 7:30 p. m. After 7 the meal, they will have the birthday party at Debbie's house at about 8:30 p. m. Her friend Jack, has many nice CDs. He will bring some of them to the party and let everyone 8 the music. And Mary will also play 9 piano for everyone. She is a good pianist in their class. Debbie thinks they are sure to enjoy 10 .