求翻译：如果您收到这封邮件的时候已经过了最后期限了，那么一定是因为时差的问题。（开个玩笑）。很抱歉今天下午才知道有一份作业等着我去完成，可能那您留作业的那天我没有到，或者是忘记了。是什么意思？

If you receive this message when the deadline has passed, then it must be because the time difference problem. (Joke). Sorry to know this afternoon to have a job waiting for me to finish, then you may leave the job of the day I do not have to, or forgotten.

If you receive this message when the deadline has passed, it is certainly because of jet lag. (a joke). I am sorry this afternoon before we know that there is a job waiting for me to do the work, you may then your homework, or the day that I was not to be forgotten.

If you receive this mail time passed through the deadline, then is certainly because of time difference question.(Cracks a joke).Was sorry very much this afternoon only then knew has a work to wait for me to complete, possibly that you keep the work that day I not to have, or forgot.

If you receive this message when the deadline has passed, it will be because of jet lag problems. (A joke). Sorry didn't know this afternoon have a job waiting for me to do, and maybe that your no homework that I don't have to, or forgotten.

If you receive this message when the deadline has passed, it will be because of jet lag problems. (A joke). Sorry didn't know this afternoon have a job waiting for me to do, and maybe that your no homework that I don't have to, or forgotten.