Вопрос по английскому языку:

Помогите с темой, не могу понять! Спасибо огромное заранее!
Задание -
Перефразируйте предложения:

1) John heard his sister. She was talking loudly in the room.
2) She dropped the cup on the floor and broke it. I saw it.
3) I heard the door of the entrance hall open and close softly.
4) In the room he could see a man sitting in an old armchair.