Odpowiedź :
Odpowiedź:
1 I was reading a book when the lights went out.
2 Mum was making lunch while dad was repairing the car.
3 My friend was surfing the net when his sister called him.
4 At 7 last Friday I was watching TV while my brother was playing chess with his friend.
Wyjaśnienie:
W zdaniach z "when" użyłam Simple Past (krótka czynność, dokonana);
w zdaniach z "while" użyłam Past Continuous (czynność trwająca w czasie)