We are anxiously awaiting your reply .
我们正焦急地等候你的来临。
Well, let me finish here and I am already eagerly awaiting your reply to this first letter.
好吧，我就写到这里吧，我已经迫不及待地期盼着你对这第一封信的回复了。
Awaiting your soonest reply in this regard.
在这方面等待您最快的答复。
Awaiting your soonest reply, and thank you for your kind cooperation.
要你尽快答复，感谢你的合作。
Awaiting your soonest reply, and thank you for your kind cooperation.
要你尽快答复，感谢你的合作。
应用推荐