1 I didn’t recognize Helen, because she had cut her hair very short.2 No one understood how the cat had got into the car.3 Joe didn’t play in the game on Saturday because he had hurt his arm.4 When I had looked in all my pockets for my keys, I started to get worried.5 Mary had never travelled by train before she went to Europe. 6 I arrived at the shop at six, but it had already closed.