Change the sentences from present to past 1?

Change the sentences from present to past 1. He isn't a judo champion he__a judo chanmpion 2. Where are your friends? Where___your friends? 3. mr tuner is a good teacher mr tuner ___a good teacher 4. No, they aren't no, they____ 5. Is your brother happy ? ____your brother happy? 6. i'm not a runner i___a runnerb 7. Is the film good? ___the film good? 8. are they at the swimming pool? _____they at the swimming pool?