阅读理解：阅读下面的对话，选择合适的内容将对话补充完整。
Dear Sirs,
Account No.8756
1.{A;B;C;D;E}
2.{A;B;C;D;E}
3.{A;B;C;D;E}
4.{A;B;C;D;E}
5.{A;B;C;D;E}
A、Your prompt attention to this matter would be greatly appreciated.If you have any questions regarding this account, please contact our office as soon as possible.
B、Regards,
Lily
C、Please note that your account No.8756 was already a month overdue.As you are usually very prompt in settling your accounts, we wonder whether there is any special reason.
D、If payment has recently been made, please accept our thanks and ignore this reminder.
E、We think you may not have received the statement of account we sent you on August 30 showing the balance of US$ 80,000 you owe.We are sending you a copy and hope it may have your early attention.

A.8756
1.{A;B;C;D;E}
2.{A;B;C;D;E}
3.{A;B;C;D;E}
4.{A;B;C;D;E}
5.{A;B;C;D;E}
A、Your
B.If
C.
B、Regards,
Lily
C、Please
D.8756
E.As
F.
D、If
G.
E、We
H.We
I.