补全对话。从所给选项中选出能填入空白处的最佳答案。(其中有两项是多余的)
A、 Would you like to come?    
B、 What time will it begin?
C、Here you are.               
D、Have you finished your homework?
E、Where is she?               
F、By the way.
G、I’ll help you.
A:   _________________________?                                       
B: Not yet. Exercise 3 is too difficult for me.
A: Don’t worry. _______________________.
B: It’s very kind of you. But I think I can do it myself. Can you lend me your English-Chinese dictionary?
A: With pleasure. . ______________________..
B: Thanks. . ________________, is Miss Gao at the teachers’ office?
A: Oh, no. She’s out at the moment.
B: ._______________________? Do you know? I have some questions to ask her.
A: I think she is at the library. She told me she wanted to borrow some books.
B: I have to wait for her.