题目内容：

根据下面的对话中的情景，再每一空中填入一个适当的语句，使语句恢复完整。

A:Hello,Mary.

B: 76_________________________________?

A: Hi,Mary,this is Tom.77_____________________________?    

B: I'm reading a book.

A: Do you want to go to the movies?

B: 78_______________________.The book is too boring.

A: 79 _________________________________.

B: Ok.I like watching action movies.80________________?

A: Let's go at seven o'clock. It begins at seven thirty.

B: Ok.See you then.

A: See you.