题目内容：

 

根据对话内容，从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

— Oh, madam.   1.

— I'm sorry to say the bill you sent me was incorrect.

— Incorrect, madam?   2.

— Yes, I know.   3.

— Really, madam? I find it very hard to believe.

—   4.

— Ah. Well, I must apologize, madam. It’s the new computer.

— Well, don't you think it's about time you got it working properly? It's most inconvenient.

— I agree entirely. I'm very sorry about it.  5.

    A. Could you help me?               B. That's very strange.

    C. What can I do for you?           D. And what's more, this isn't the first time.

    E. But I think this is the first time.      F. I promise you it won't happen again.

    G. Look, it’s happened five or six times in the past three months.