Question

They_chess for three hours__ Tom entered the room. A) were playing, tillB) Are playing, if C) had been playing, whenD)played,sinceE) were playing, as soon as​

Answer 1

Ответ:

they had been playing chess for three hours when Tom entered the room

Объяснение:

хз А и Д по смыслу больше подходит но С звучит будто оно там так и должно быть, обычно уточняют время когда пишется have/had been

Answer 2

The correct answer is C) had been playing, when.

The sentence is describing an action that was ongoing in the past ("playing chess") and is interrupted by another action ("Tom entered the room"). The past perfect continuous tense ("had been playing") is used to show the ongoing nature of the action before the interruption. The word "when" is used to indicate the point at which the interruption occurred.