Упражнение 1. Complete the pairs of sentences. Use the Present Perfect or the Past Simple in the other.

1. I (know) have known her for six years.
I (know) knew him when I was at school.

1. He (live) lived in Paris from 1997 to 2000.
He (live) has lived in New York since 2001.

1. Where's Pete? I (not see) haven't seen him for ages.
I (not see) didn't see Pete last night.

1. We (be) were at primary school from 1993 to 1998.
We (be) have been in this class since September.

1. I (not watch) haven't watched this video yet.
I (not watch) didn't watch a video at the weekend.

*Объяснение: В данном упражнении необходимо использовать Present Perfect или Past Simple в зависимости от контекста. Present Perfect используется для действий, которые начались в прошлом и продолжаются до настоящего времени или имеют результат в настоящем. Past Simple используется для действий, которые завершились в прошлом.*