6 A have you and Ben been friends? B: We've been friends twelve years

6 A: Have you and Ben been friends for?
B: We've been friends for twelve years

<h3>Ответ (EN):</h3>
<ol>
  <li>A: Have you and Ben been friends <strong>for</strong>?</li>
  <li>B: We've been friends <strong>for</strong> twelve years</li>
</ol>
<h3>Перевод (RU):</h3>
<ol>
  <li>A: Вы и Бен дружите <strong>уже</strong>?</li>
  <li>B: Мы дружим <strong>уже</strong> двенадцать лет</li>
</ol>

Ответ: for, for