I am extremely pleased to hear from you. And I would like to write a letter to tell you that_____.……
I will greatly appreciate a response from you at your earliest convenience/I am looking f0rward to your replies at your earliest convenience.
Best regards for your health and success.

Nowadays,there are more and more __ _ in __ _. It is estimated that ___. Why
have there been so many ____? Maybe the reasons can be listed as follows.
The first one is ______. Besides,_____. The third one is _____. To sum up，the
main cause of it is due to _____. It is high time that something were done upon it. For one thing,_____. For another thing,_____. All these measures will certainly reduce the number of _____.

The topic of ① -----------------(主题)is becoming more and more popular recently.There are two sides of opinions about it. Some people say A is their favorite. They hold their view for the reason of ② -----------------( 支持A的理由一)Whatn is more,③-------------理由二). Moreover,④---------------(理由三).
While others think that B is a better choice in the following three reasons.Firsly,-----------------(支持B的理由一).Secondly(besides),⑥------------------(理由二). Thirdly (finally),⑦------------------(理由三).
From my point of view, I think⑧----------------(我的观点).The reason is that ⑨--------------------(原因). As a matter of fact, there are some other reasons to explain my choice. For me, the former is surely a wise choice .

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