用A~E将下列句子排列成一段完整的对话。 ( )(1) Hello , Lucy , You look worried , What’s the matter ? ( )(2) What is in your bag ? ( )(3) Yes , it is . Thank you ! ( )(4) Hi , Tom ! ( )(5) You’re welcome ! ( )(6) I lost my bag , It’s big and red . It’s my favorite one . ( )(7) Is this your bag ? ( )(8) There is a book and two pencils in the bag .