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1. We moved here after I entered the university.
2. He has been an actor since if has arrived here.
3. I have been to Germany in 2001.
4. We have studied English since 3 years.
5. They have been learning this course during 3 weeks.
6. Someone talked all the time while we watched the film at the cinema.
7. Alex explained that he did not see Cindo since more than a week ago.
8. At the end of October, Richard had not asked her to meet his mother.