Question

They __when the fire started. a) slept, b) sleeping, c) were sleeping

Answer 1

Ответ:

They slept when the fire started

Answer 2

The correct answer is "c) were sleeping."

The past continuous tense is used to describe an ongoing action that was happening at a specific point in the past. In this case, the action of sleeping was ongoing when the fire started. Therefore, we use the past continuous tense by adding "were" before the verb "sleeping."