You are writing a formal email to a university registrar to ask for an extension of an application deadline. Which sentence follows the speech norms of formal written polite requests?
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Верный ответ
- AI would be grateful if you could extend the deadline.
Разбор
The situation requires a formal, polite, indirect request. 'I would be grateful if you could extend the deadline.' is a standard formal request: it is indirect, uses conditional politeness and is grammatically correct. 'Can you give me more time? That'd be great, thanks!' is too informal (a direct question, a contraction and a casual closing). 'I demand that you extend the deadline at once.' is a command and sounds rude to an official. 'Would you mind to extend the deadline, please?' has the right polite intention but breaks the norm: 'mind' is followed by a gerund ('mind extending'), not by an infinitive.