Hi Jerry, there is not need of "toi" or "you" for the French imperative mood. http://french.about.com/od/grammar/a/imperative.htm
We use the imperative mood only for an advice, one prayer, an order, a ban, or an instruction. It is very hard to explain in English for me. http://www.francaisfacile.com/exercices/exercice-francais-2/exercice-francais-32611.php. I hope I have been helpful.
Because in the imperative mood (when you give an order), there is no personal pronoun.
The difference in the conjugation tells you the difference of address between "écris" which is exclusive for "tu" and "écrivez" which is an address to one person, formally or to two or more people.
Since there is no subject pronoun, it would be understood as an imperative. That means there are three (and only three) possibilities:
- écris la question (this is the informal "tu" version). Note that it is not écrives, which is the indicative
- écrivons la question, i.e, "let's write down the question"
- écrivez la question (this is the polite --or plural-- form).
So you can try one of the sites like Google Translate or Forvo.com to listen to the differences between these: écris, écrivons, and écrivez. But I suspect you have mastered that by now.