Directions: This part is to test your ability to do practical writing. You are required to write a business letter according to the following information given in Chinese. Remember to do the task on the Translation/Composition Sheet.
说明：根据下列信息写一封催款信。
写信人：戴维(David)
收信人：弗兰克(Frank)
写信日期：3月30日
内容：
1．根据账单9876号，戴维(David)未收到弗兰克(Frank)的已过期一个月的欠款；
2．戴维(David)猜想弗兰克(Frank)可能有什么特殊原因；
3．原因可能是未及时收到3月3日发出的$10,000的催款单；
4．戴维(David)现在再寄给弗兰克(Frank)一份催款单，希望他及早处理；
5．戴维(David)期待弗兰克(Frank)说明原因并尽快还款。
注意信函格式!
Words for reference：
账单 account 过期 overdue
[范文] March 30
Dear Frank,
As you are usually prompt in settling your accounts, I wonder whether there is any special reason why I have not received the payment of Account No. 9876 so far, which is a month overdue. Please check your records. I think you may not receive the payment reminder we have sent you on March 3 showing the balance of $ 10,000 you owe. No doubt there are some special reasons for delay in payment and we would welcome an explanation and also your remittance. I will send you a copy of the payment reminder and hope that it will receive your early attention.
Yours sincerely, David