1、I was glad to hear you good news.

很高兴听到您的消息。

2、Forgive me for not writing sooner.

原谅我没有很快回信。

3、It was very kind of you to reply so quickly.

你能很快回信太好了。

4、I am sorry to hear that you have not been well.

听说您身体不好我很难过。