3 Choose the correct alternatives to complete the sentences. 1 Yesterday we used to have/had an exam at school. It was really difficult! 2 I didn't go to the cinema with Cathy because I saw/had seen the film before. 3 I had played/used to play rugby when I was at school but I don't anymore. 4 We got to the station at three o'clock and had caught/caught the next train to Oxford. 5 As soon as it started to rain, we packed/had packed up the picnic and went home.