收到你的来信很高兴。很遗憾我周四就离开了。我希望你们周五周六的老师还不错。

Good to get a letter from you! I was sad to leave on Thursday, I hope your English teacher on Friday and Saturday was good.

youdao

很高兴收到你的来信。

It's great to hear from you.

youdao

收到你的来信我很高兴，为同你们的合作，我们已经做了很多的前期工作。

Received your letter I am very pleased, with your cooperation, we have done a lot of preparatory work.

youdao