I'm writing in reply to your question on how to learn English.

我写这封信是为了回答你关于如何学习英语的问题的。

youdao

I have nothing to say in reply to your question.

对于你的问题，我没有什么好回答的。

youdao

In order to reply to your question we need to know the exact reference number, which is engraved on the case back.

为能解答您这个问题， 请您提供我们镌刻在表壳后的系列号码。

youdao