Fill in : since , for , already , just , yet. 1.I haven't seen Sarah ____ 2007. 2. They haven't bought the ticket for

1. I haven\'t seen Sarah since 2007. 2. They haven\'t bought the ticket for the concert yet. 3. We have lived here for ten years. 4. He has just come back from jogging and he\'s a bit tired. 5. We have already seen that film. Can we watch something else?