Read the sentences and choose since or for.
1. I've lived in Vienna ..... 3 years.
2. I've been waiting for the train ..... 25 minutes.
3. I haven't phoned home ..... Christmas.
4. Johan has been in England ..... more than two weeks now.
5. He's worked in this department ..... December.
6. The cake has been in the oven ..... half an hour.