3. Choose the correct tense forms. The parents ... something while their children ... a snow castle. A) were discussing, have built; B) have discussed, were building; C) discuss, had built; D) were discussing, were building; E) discussed, are building.

Перевод задания: Выберите правильные формы глаголов.

Правильный вариант: D) were discussing, were building.

Оба действия происходили одновременно в прошлом, поэтому используется Past Continuous: The parents were discussing something while their children were building a snow castle.

Родители что-то обсуждали, пока их дети строили снежную крепость.