1. complete the pairs of sentences. use the present perfect or the past simple in the other. 1. i (know) her for six years. i (know) him when i was at school. 2. he (live) in paris from 1997 to 2000. he (live) in new york since 2001. 3. where's pete? i (not see) him for ages. i (not see) pete last night. 4. we (be) at primary school from 1993 to 1998. we (be) in this class since september. 5. i (not watch) this video yet. i (not watch) a video at the weekend.