I'm writing in answer to your letter.

特此函复。

《牛津词典》

All of those questions I hope you'll talk about in your discussion groups later this week, and if you're writing papers, push yourself to answer some big questions in your papers.

所有这些问题，我希望你们能在本周的小组讨论时讨论，如果要写论文，请尝试在论文中回答一些困难的问题。

youdao

In such cases, writing a program to build static data tables is usually your best answer.

在这种情况中，编写一个程序来构建一张静态表通常是最好的解决方案。

youdao

He said he had discussed the issue with the prime minister in July and while they had "agreed to disagree" on it, but Mr Cameron had also promised to answer in writing.

BBC: EU referendum: Cross-party campaign launched

They are instructed to read them, practise writing them in their workbooks, and answer questions.

UNESCO: Mobile-Based Post Literacy Programme

We have sent him questions about this, in writing, but he has declined to answer.

ECONOMIST: An Italian story | The