她正在认真地写着笔记。

She is ___writing notes carefully.

孩子们正在练习本上认真写字。

The children are ___writing carefully in their exercise books.

她正在写一本关于环境保护的书。

She is ___writing a book about environmental protection.

她以写作谋生，为杂志撰写文章。

She earns her living by ___writing articles for magazines.

他的写作风格简洁明了。

His ___writing style is clear and concise.