Odpowiedź:
2.1-The concert had already started.
2.2-When did you buy this camera?
2.3-The courier arrived while I was taking my online history test.
2.4-I didn't use to like volleyball, but now it's my favourite sport.
2.5-Did you keen on playing boardgames when you were a child?
2.6-Ken didn't play computer games last night because he was too tired.
